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Siren Gold Limited

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FY2023 Annual Report · Siren Gold Limited
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BREAKTHROUGH SCIENCE FOR  
LUNG INFECTIONS  

Annual Report and Accounts 2023 

LSE: SNG 
www.synairgen.com 
Company Number: 5233429 

 
 
 
 
 
 
Contents 
Strategic report 

Highlights ............................................................................................................................................ 2 

Chairman’s Statement ........................................................................................................................ 3 

Strategic Report .................................................................................................................................. 4 

Governance 

Board of Directors ............................................................................................................................. 14 

Corporate Governance Statement .................................................................................................... 16 

Directors’ Remuneration Report ....................................................................................................... 21 

Report of the Audit Committee ......................................................................................................... 26 

Directors’ Report ............................................................................................................................... 29 

Statement of Directors’ Responsibilities in Respect of the Annual Report and the Financial 
Statements ........................................................................................................................................ 31 

Financial statements 

Independent Auditor’s Report to the Members of Synairgen PLC ................................................... 32 

Consolidated Statement of Comprehensive Income ........................................................................ 40 

Consolidated Statement of Changes in Equity ................................................................................. 41 

Consolidated Statement of Financial Position .................................................................................. 42 

Consolidated Statement of Cash Flows ........................................................................................... 43 

Notes to the Consolidated Financial Statements .............................................................................. 44 

Parent Company Balance Sheet ...................................................................................................... 58 

Parent Company Statement of Changes in Equity ........................................................................... 59 

Notes to the Parent Company Financial Statements........................................................................ 60 

Other information 

Corporate Directory .......................................................................................................................... 65 

Glossary ............................................................................................................................................ 66 

1 

 
 
 
 
 
 
Highlights (including post period-end) 

Operational  

•  Completed a full assessment of the underpinning science, clinical trial data, clinical need and 

commercial opportunity to determine next steps for SNG001 

•  Commenced preparatory work in 2023 to deliver a trial focusing on mechanically ventilated 
patients who we believe are the most attractive near-term patient group with respect to the 
extent of the unmet need, the commercial potential in a clearly identifiable population and the 
clinical development route for SNG001 

•  Recognised  that  opportunities  for  potential  future  assessment  of  SNG001  in  platform  trials 

and/or academic trials may materialise in the event of an emerging virus threat 

•  Continued collaboration with the University of Southampton’s UNIVERSAL trial aimed at better 
characterising  patients  hospitalised  with  respiratory  viral  infections  with  over  500  patients 
recruited to date 

Financial 

•  Prudent cost control applied across all operations 

•  Loss from operations for the year ended 31 December 2023 was £10.3 million (2022: £20.3 

million loss) 

•  Cash  and  cash  equivalents,  and  bank  deposits  of  £12.0  million  at  31  December  2023  (31 

December 2022: £19.7 million) 

2 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Chairman’s Statement 

There remains a significant unmet medical need for new treatments for respiratory viral infections which 
are caused  by a wide range of  viruses (influenza, RSV,  SARS-CoV-2, rhinovirus, metapneumovirus 
and others). Antiviral therapeutic options are limited for the majority of hospitalised adult patients with 
severe viral lung infections, which remain a leading cause of death globally. Approximately 2.5 million 
people in the US are hospitalised each year due these respiratory viruses.  

Synairgen’s  relentless  focus  in  the  year  has  been  on  applying  the  insights  gained  from  2020/21  to 
determine the best path forward for clinical development of its investigational drug, SNG001, for severe 
viral  lung  infections.  This  was  conducted  amidst  the  backdrop  of  a  challenging  year  for  the  biotech 
sector; we have regained momentum and stand on the verge of embarking on a Phase 2 trial in patients 
who are mechanically ventilated as a result of a respiratory viral infection, subject to finalising the trial 
financing  plan.  We  have  selected  this  population  because  it  has  a  high  unmet  need,  represents  a 
significant commercial opportunity, patients are readily identifiable and the clinical path is clear. We look 
forward to communicating the trial design and associated financing plan.    

Since the results of SPRINTER and ACTIV-2 trials were announced, our team has focussed on using 
the findings from these studies, the literature and clinical experts to determine which patients stand to 
potentially  benefit  most  from  SNG001  and  developing  the  clinical  network  and  trial  protocol  which 
carries an appropriate level of risk and reward for Synairgen shareholders. The considerable research 
work  that  was  required  to  critically  evaluate  all  potential  options  has  ultimately  led  us  to  eliminate  a 
number of potentially promising avenues for further clinical development. We have made a strategic 
decision  to  focus  on  mechanically  ventilated  patients  in  the  hospital  setting  enabling  clinical 
development  with  smaller,  easier  to  deliver  clinical  trials  in  an  area  of  high  unmet  medical  and 
pharmacoeconomic need. We have determined that it is inappropriate at this stage for the Company to 
conduct clinical trials in the non-hospitalised setting, although we believe that SNG001 continues to be 
an attractive asset  in this setting, and  we are  open for inclusion of SNG001  in  platform trials and/or 
collaborations as and when viral threats emerge. 

I would like to take this opportunity to thank the entire team for their unwavering commitment to finding 
a path forward for SNG001 and express my appreciation to our shareholders for their continued support. 
I look forward to updating the market with both greater detail on our development. 

Simon Shaw  
Chairman 
26 June 2024 

3 

 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
Strategic Report 

Overview 
During the past year the Group thoroughly assessed a wide range of options to identify the best route 
forward for its broad-spectrum host-directed antiviral drug, SNG001 (inhaled interferon  beta), for the 
treatment  of  severe  viral  lung  infections.  Respiratory  viral  infections  are  the  most  common  cause  of 
infectious disease and when they affect the lungs, they can cause significant morbidity and mortality. 
Interferon-beta is a naturally occurring protein, produced in response to viral infections, that drives the 
body’s  antiviral  responses.  People  who  make  less  interferon  beta,  for  example  due  to  their  genetic 
profile, age or disease, are at greater risk of developing severe viral lung infections. Respiratory viruses 
themselves also supress interferon beta production to evade host antiviral responses. Together these 
factors provide the rationale to deliver SNG001 directly into the lungs as an aerosol to boost/restore the 
lungs’ antiviral responses to clear the virus. During the year, Synairgen completed a review of potential 
development  opportunities  for  SNG001  through  careful  assessment  of  the  underpinning  science, 
strength of clinical data, trial feasibility, clinical need and commercial opportunity. This included options 
in both hospitalised and non-hospitalised patients, and those with critical illness due to any respiratory 
virus.  

As a result of this analysis, it has become clear that the hospitalised patient setting provides the greatest 
opportunity  for  SNG001  to  provide  assessable  benefit  in  a  group  of  patients  in  whom  there  is 
considerable  unmet  clinical  need.  Synairgen  has  focused  its  efforts  on  projects  designed  to  enable 
identification of hospitalised patients at the highest risk of poor outcomes, which would make clinical 
trials more targeted whilst maximising the chance of success clinically and commercially.  

The Company has developed a new trial plan focussed on mechanically ventilated patients that takes 
into  account  a  range  of  important  factors  including  learnings  from  trials  of  SNG001  in  hospitalised 
patients, the high unmet need, and the clear commercial strategy for this group of very expensive to 
treat patients. It is intended to commence the trial this winter and will be supported by data from various 
projects,  including  the  UNIVERSAL  trial,  a  UK-wide  observational  trial  in  patients  hospitalised  with 
respiratory  viral  infections,  led  by  Prof.  Tom  Wilkinson  and  colleagues  from  the  University  of 
Southampton, in conjunction with pharmaceutical industry partners. Recruitment has continued at pace 
into UNIVERSAL and the important insights will help the Company develop criteria to select populations 
most likely to respond to SNG001 for inclusion in future clinical trials. 

Our strategy and plans 
Mechanically ventilated patients 
Respiratory viral infections are a significant burden on the global healthcare system and are associated 
with  high  morbidity  and  mortality.  Approximately  2.5  million12  people  in  the  US  continue  to  be 
hospitalised  each  year  due  to  respiratory  symptoms  associated  with  a  respiratory  virus.  Prior  to  the 
pandemic, influenza was often singled out as the main driver of the winter virus season accounting for 
~0.5m1  hospitalisations  each  year,  however  it  is  estimated  that  the  so  called  ‘common  cold  viruses’ 
such as rhinovirus, coronavirus, RSV, parainfluenza, HMPV and adenovirus collectively account for an 
additional 2 million hospitalisations2, and SARS-CoV-2 persists as a problematic pathogen.  

Patients on ventilators with viral pneumonia have a 25-45%34 chance of dying. There are few approved 
antiviral options for these patients and, for most respiratory viruses, no specific antiviral treatments. The 
literature also indicates that patients who develop severe viral lung disease have higher viral loads and 
shed virus for longer pointing to a compromised immune/antiviral response.  

1 https://www.cdc.gov/flu/about/burden/past-seasons.html 

2 Sieling WD, Goldman CR, Oberhardt M, Phillips M, Finelli L, Saiman L. Comparative incidence and burden of respiratory 
viruses associated with hospitalization in adults in New York City. Influenza Other Respir Viruses. 2021 Sep;15(5):670-677. 

3 Piroth L, Cottenet J, Mariet AS, Bonniaud P, Blot M, Tubert-Bitter P, Quantin C. Comparison of the characteristics, morbidity, 
and mortality of COVID-19 and seasonal influenza: a nationwide, population-based retrospective cohort study. Lancet Respir 
Med. 2021 Mar;9(3):251-259. 

4 Louie JK, Acosta M, Winter K, Jean C, Gavali S, Schechter R, Vugia D, Harriman K, Matyas B, Glaser CA, Samuel MC, 
Rosenberg J, Talarico J, Hatch D; California Pandemic (H1N1) Working Group. Factors associated with death or hospitalization 
due to pandemic 2009 influenza A(H1N1) infection in California. JAMA. 2009 Nov 4;302(17):1896-902. 

4 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
Analyses  of  several  trials  conducted  by  Synairgen  to  date  reveal  that,  across  different  patient 
populations and care settings, those with more severe disease at the start of treatment responded best 
to  treatment  with  SNG001.  This  includes  prevention  of  hospitalisation  in  patients  treated  in  the 
community as well as progression to severe disease or death in patients hospitalised due to their viral 
infection.  These  observations  underpin  our  strategy  of  targeting  patients  at  the  highest  risk  of  poor 
outcomes. 

As  a  broad-spectrum  antiviral  drug,  SNG001  has  shown  in  vitro  effects  against  multiple  respiratory 
viruses  and  in  vivo  has  uncovered  its  potential  to  treat  and/or  prevent  severe  viral  lung  infection. 
Preparatory work for a trial commenced in 2023 and has continued into 2024. The company is currently 
finalising potential trial structures and a potential financing plan to enable it to pursue an enhanced trial 
structure. If this comes about, details will be communicated in due course.   

UNIVERSAL trial 
During  the  year  the  Group  has  continued  its  work  with  Prof.  Tom  Wilkinson  from  the  University  of 
Southampton  to  progress  UNIVERSAL,  a  multi-centre  observational  study  in  patients  recently 
hospitalised  due  to  respiratory  viruses.  UNIVERSAL  is  supported  by  Synairgen,  AstraZeneca,  and 
Janssen. A key objective is to develop methods to identify patients at higher risk of poor outcomes due 
to respiratory viruses.  

UNIVERSAL is progressing well with more than 500 patients recruited to date. Data and samples are 
being analysed as they are  collected  and will continue through 2024. Results from UNIVERSAL will 
provide more insight for the Company to help inform the design of future trials with SNG001, allowing 
Synairgen to identify patients at the highest risk of disease progression whilst avoiding patients who are 
more likely to recover rapidly without the need for an antiviral intervention. 

Key learnings from other patient populations 
Non-hospitalised: During the pandemic the Company generated encouraging data in non-hospitalised 
patients  from  both  its  own  ‘SG016  home  trial’  and  through  collaboration  with  the  US  Government’s 
ACTIV-2 trial team, which was ultimately halted due to declining rates of infection. This COVID-19 data 
sits well alongside earlier data from trials in asthma and COPD. 

Neither the SG016 home nor ACTIV-2 studies were powered to demonstrate statistical significance on 
hospital admission as an endpoint, however pooling the data from all 330 COVID-19 patients from the 
two studies showed that 1 out of 165 patients on SNG001 (<1%) were hospitalised compared to 10 out 
of 165 (6%) placebo patients56. This represents a ~90% relative risk reduction, a comparable reduction 
to that seen with Paxlovid in Phase 3 trials. The encouraging signals coincided with the less pathogenic 
Omicron becoming the dominant circulating variant. As a result, hospitalisation rates with COVID-19 
significantly dropped, meaning that clinical trial sizes needed to confirm the efficacy of SNG001 in the 
outpatient setting would exceed thousands of patients and therefore became commercially unfeasible 
for a Company of Synairgen’s size.   

Despite  this,  Synairgen  believes  that  SNG001  continues  to  be  an  attractive  asset  for  inclusion  in 
platform trials, a position the Company was not in prior to the pandemic. 

Long  term  viral  shedders:  Beyond  pandemic  preparedness,  Synairgen  has  explored  various  non-
hospitalised patient groups who are particularly vulnerable to viral lung infections, with a particular focus 
on patients who struggle to clear the virus and become long term shedders of virus, many of whom are 
treatments).  After  careful 
immunocompromised  patients 

through  undertaking  cancer 

(e.g. 

5 Jagannathan P, Chew KW, Giganti MJ, Hughes MD, Moser C, Main MJ, Monk PD, Javan AC, Li JZ, Fletcher CV, McCarthy 
C, Wohl DA, Daar ES, Eron JJ, Currier JS, Singh U, Smith DM, Fischer W; ACTIV-2/A5401 Study Team. Safety and efficacy of 
inhaled interferon-β1a (SNG001) in adults with mild-to-moderate COVID-19: a randomized, controlled, phase II trial. 
EClinicalMedicine. 2023 Oct 6;65:102250. doi: 10.1016/j.eclinm.2023.102250. PMID: 37855026; PMCID: PMC10579289. 

6 Francis NA, Monk PD, Nuttall J, Oliver T, Simpson C, Brookes JL, Tear VJ, Thompson AG, Batten TN, Mankowski M, 
Wilkinson TM. Feasibility of home administration of nebulised interferon ß-1a (SNG001) for COVID-19: a remote study. BJGP 
Open. 2023 Dec 19;7(4):BJGPO.2023.0089. doi: 10.3399/BJGPO.2023.0089. PMID: 37669805; PMCID: PMC11176681.  

5 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
consideration, the Company elected not to fund its own trials in these very high-risk patients at this point 
in time. This decision was primarily based on the large size of trial required to demonstrate a reduction 
in  the  rate  that  patients  are  hospitalised,  and  the  logistical  complexity  of  patient  identification.  The 
Company will, however, continue to be open to trial collaborations in this area.  

Summary 
After conducting a rigorous evaluation of the clinical need, supporting scientific literature, trial feasibility, 
and commercial viability, Synairgen’s strategic decision is to determine an appropriately sized trial in 
mechanically ventilated patients who it believes are most likely to benefit from SNG001 as a result of 
infection from a wide range of respiratory viruses causing appreciable morbidity, mortality and a strain 
on health care infrastructure. 

The Company continues to be  extremely excited by  the potential for SNG001 to be the first inhaled 
broad-spectrum antiviral targeting the lungs. The Synairgen team is ever grateful for the support of its 
loyal  investors,  partners  and  staff  in  a  crucial  year  where  it  has  researched  the  rationale  for,  and  is 
gearing up to execute on, the most appropriate strategy for the development of SNG001. The Company 
is currently finalising its assessment of the best combination of trial structure/locations and associated 
financing requirement and aim to communicate the outcome of this soon with a view to commencing 
the next Phase 2 trial this winter. 

Financial Review 

The Financial Review should be read in conjunction with the consolidated financial statements of the 
Company  and  its  subsidiaries  (together  the  ‘Group’)  and  the  notes  thereto  on  pages  40  to  57.  The 
consolidated financial statements are prepared in accordance with UK-adopted international accounting 
standards.  

The financial statements of the Company, set out on pages 58 to 64, are prepared in accordance with 
Financial Reporting Standard 101 Reduced Disclosure Framework.  

Consolidated Statement of Comprehensive Income  
The loss from operations for the year ended 31 December 2023 was £10.3 million (2022: £20.3 million 
loss) with research and development expenditure amounting to £6.5 million (2022: £14.9 million) and 
other administrative expenses of £3.8 million (2022: £5.4 million).  

Expenditure on research and development activity decreased in 2023, continuing the trend from the 
prior year, as the Group focussed on refining plans for future clinical trials.  

Clinical trial expenditure was limited to the cost of closing out the SPRINTER, SG015 and SG016 trials, 
in conjunction with preparatory work to design future clinical trial activity, such as participation in the 
UNIVERSAL trial.    

Manufacturing activities also reduced significantly in the year, with spend focussed on the manufacture 
of  a  new  batch  of  drug  product  and  placebo  (pre-filled  syringes),  and  third-party  laboratory  testing 
(incorporating stability, comparison and release testing of drug product, qualification of new reference 
standards).  All manufacturing costs were expensed to the income statement.  

Expenditure on science (R&D) and quality departments remain flat on the prior year, with regulatory 
costs reducing in-line with diminished trial activity.  

Other administrative expenses totalled £3.8 million in 2023, which comprise all expenses which are not 
research  and  development  expenditure,  and  predominantly  reflect  staff  costs  and  professional  fees. 
This represents a decrease of £1.6  million  on the prior year (2022: £5.4 million), due to cost saving 
initiatives  implemented  within  commercial,  medical  affairs,  business  development,  and  corporate 
communications.  

Interest receivable increased from £0.2 million to £0.6 million, as deposit interest rates increased during 
2023.  

6 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
The research and development tax credit (including R&D expenditure credit - “RDEC”) decreased from 
£2.4 million to £1.3 million in line with reduced qualifying research and development expenditure. The 
credit equates to 20% of our 2023 research and development expenditure (2022: 16%).  

The loss after tax for 2023 was £8.4 million (2022: £17.6 million) and the basic loss per share was 4.18p 
(2022: basic loss per share of 8.76p).  

Consolidated Statement of Financial Position and Cash Flows  
At 31 December 2023, net assets amounted to £12.7 million (2022: £20.3 million), including cash and 
deposit  balances  of  £12.0  million,  comprising  cash  and  cash  equivalents  of  £10.5  million  and  other 
financial assets – bank deposits of £1.5 million (2022: £19.7 million cash and bank deposit balances).  

The principal elements of the £7.7 million decrease during the year ended 31 December 2023 (2022: 
£14.1 million decrease) in cash and bank deposit balances were:  

•  Cash  outflows  from  operations  before  changes  in  working  capital:  £9.4  million  (2022:  £19.3 
million),  with  the  reduction  being  attributable  to  the  lower  research  and  development 
administrative expenditure and as explained above;  

•  Changes in working capital: £1.2 million outflow (2022: £4.1 million outflow), due to a reduction 
in  trade  and  other  payables  of  £1.7  million,  and  a  £0.5  million  decrease  in  trade  and  other 
receivables;  
Interest received £0.6 million (2022: £0.2 million); and  

• 
•  Research and development tax credits received: £2.4 million (2022: £9.1 million) on account of 

receipt of the 2022 tax credit.  

The other significant changes in the Statement of Financial Position were:  

•  Current  tax  receivable  decreased  from  £2.4  million  to  £1.3  million  on  account  of  the  lower 

research and development tax credit (including RDEC) receivable;  

•  Trade and other receivables decreased by £0.5 million to £0.8 million (2022: £1.3 million), due 
predominantly  to  a  reduction  in  prepayments  due  to  the  reduction  in  the  level  of  operating 
expenditure; 

•  Trade and other payables decreased by £1.7 million to £1.6 million (2022: £3.3 million), in line 

with the reduction in the level of operating expenditure. 

Parent Company Balance Sheet  
Company only impairment review of investment in subsidiary. 
The  Company  performed  an  impairment  review  of  the  carrying  value  of  the  Parent  Company’s 
investment in Synairgen Research Limited, using a value in use methodology, due to Synairgen’s share 
price  being an  indicator of  possible  impairment.  As a  result  of  this review,  it has concluded that the 
recoverable amount exceeds the carrying value, and therefore the investment is not impaired. 

Key Performance Indicators (KPIs) 
The Board considers that the most important KPIs during the year under review are non-financial and 
relate to the progress of pre-clinical and clinical programmes, and the advancement of manufacturing 
activities, which are discussed elsewhere in this report. 

The most important financial KPIs are the research and development expenditure on clinical trial and 
on-going  manufacturing  activities,  and  the  cash  position  of  the  Group.  Cash  and  deposit  balances 
reduced  from  £19.7  million  to  £12.0  million  principally  on  account  of  the  planned  research  and 
development expenditure. The financial results are discussed in the Financial Review above. 

Section 172 statement 
As required by section 172 of the Companies Act 2006, a director of a company must act in a way they 
consider,  in  good  faith,  would  most  likely  promote  the  success  of  the  company  for  the  benefit  of  its 
shareholders. In doing this, the director must have regard, amongst other matters, to the: 
a) 
b) 
c) 
d) 
e) 

Likely consequences of any decisions in the long-term; 
Interests of the Company’s employees; 
Need to foster the Company’s business relationships with suppliers, customers and others; 
Impact of the Company’s operations on the community and the environment; 
Desirability of the Company maintaining a reputation for high standards of business conduct; 
and 

7 

 
 
 
 
 
 
 
 
 
 
 
 
 
f) 

Need to act fairly between members of the Company. 

As a Board, its aim is always to uphold the highest standards of governance and business conduct, 
taking decisions in the interests of the long-term sustainable success of the Company, generating value 
for its shareholders and contributing to wider society. The Board recognises that the business can only 
grow  and  prosper  over  the  long  term  by  understanding  the  views  and  needs  of  its  stakeholders. 
Engaging  with  stakeholders  is  key  to  ensuring  the  Board  has  informed  discussions  and  factors 
stakeholder interests into decision-making. 

The following table, in combination with the Corporate Governance Statement set out on pages 16 to 
20 and the Company’s website (www.synairgen.com), sets out the framework of its engagement with 
key stakeholder groups. 

8 

 
 
 
 
 
 
 
Our stakeholders 

Material topics 

How we engage 

Investors 
The Group continues to consume cash resources and 
remains dependent upon securing funding through share 
issues. It is therefore critical that we have shareholders 
who will continue to invest in the Company over the longer 
term. 

Employees 
Synairgen has 36 employees (including executive 
directors) at the year end, who are multi-skilled and many 
of them have worked for the Group for many years. They 
all play a key role in the business, and it is vital that they all 
understand and support the key decisions taken in the 
running of the business. 

•  Business strategy 

•  RNS announcements 

•  Operational performance 

•  Website and social media updates 

•  Financial performance and cash 

•  Meetings after preliminary statement release and interims for 

requirements 

investors 

•  Environmental, Social and Corporate 

•  AGM 

Governance (ESG) 

•  Proactive Investor interviews 

•  Responses to direct investor questions 

•  Operational targets and progress 

•  Regular company meetings (virtual and face-to-face) and a policy of 

•  Opportunities to share ideas 

•  Financial resources of the Group 

•  Share price 

•  Working time flexibility and working 

from home 

open disclosure 

•  Regular virtual and face to face team meetings 

•  Open door policy to executive directors 

•  Company intranet 

•  Use of share-based incentives for employees 

University of Southampton 
Synairgen is a spin-out company from the University and 
still maintains many links with it, which benefits both 
parties. The University is Synairgen’s landlord and certain 
intellectual property is licensed from it. 

•  Operating facilities 

•  Meetings with Founders 

•  Intellectual property 

•  Interaction on projects with scientists and clinicians and the 

•  Joint projects 

•  Published papers 

University’s Research & Innovation Services team 

9 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Our stakeholders 

Material topics 

How we engage 

Suppliers 
We have a number of key long-term suppliers who play an 
important part in our development programs, and it is 
important that we understand their product/service 
development plans and they understand our needs. 

Customers (licensees) 
Our customers are the large pharmaceutical and biotech 
companies who have the resources and infrastructure to 
take our products to market. It is therefore critical that we 
continue to interact with these companies at an early stage 
to make sure we are developing a product which they may 
wish to license. 

Community 
We aim to develop therapeutics which pharmaceutical 
companies can sell to the community and which 
governments will buy for stockpiling and it is therefore 
critical that there is an identified market need in the 
community. 

•  Supplier product development plans 

•  Regular project meetings 

•  Our clinical trial, manufacturing and 
longer-term development needs 

•  Program development plans, including 

clinical trial designs 

•  Clinical trial read-outs 

•  In-house and external competing 

products 

•  Regular meetings at key respiratory and anti-infective conferences 
(ATS, ERS, ECCMID and ID Week) and meetings during business 
development conferences 

•  New therapeutics development 

•  Interactions with government agencies 

•  Involvement in clinical trials 

•  Interactions with clinicians and Key Opinion Leaders, including 

Advisory Boards 

•  Patient data from clinical trials 

•  Engagement with patient groups  

Regulators 
We work in a highly regulated sector, and it is critical that 
we maintain full compliance with all appropriate 
regulations. 

•  Clinical trial approvals 

•  Use of external consultants to ensure we comply with regulations 

•  Scientific advice for authorities on key 

•  Interactions with Ethics Committees, MHRA, FDA, EMA and other 

development topics 

regulatory agencies 

•  Regulatory compliance 

10 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
Principal decisions in 2023 
Synairgen has considered the decisions taken by the Board which will have an impact on the longer-term 
performance and prospects for the Group. The Board believes that four key decisions taken during the 
year  fall  into  this  category  and  were  made  with  full  consideration  of  both  internal  and  external 
stakeholders. 

•  The decision not to pursue clinical a follow-on clinical trial to SPRINTER in hospitalised patients 

on a general ward, or in non-hospitalised patients. 

•  The decision not to devote resources to a trial in immunocompromised patients who can become 

‘persistent viral shedders’ unable to clear the virus. 

•  The decision to devote resources to preparatory work to design future clinical trial activity, such 
as participation in the UNIVERSAL trial and research into the ventilated patient opportunity.   
•  The decision to reduce investment in administrative spend related to the future commercialisation 

of SNG001.  

Post period-end, the Board has considered the next strategic steps for the development of SNG001 and 
is now embarked on the design of a trial in ventilated patients. 

Principal risks and uncertainties 
In addition to the fact that the Group has only one candidate (SNG001), albeit with a number of potential 
indications,  and  is  therefore  dependent  on  there  being  a  successful  outcome  to  its  development,  the 
Board considers that the principal risks and uncertainties facing the Group may be summarised as follows: 

Ability to design and deliver appropriate broad-spectrum clinical trials 
The  Group’s  strategy  includes  developing  SNG001  as  a  broad-spectrum  antiviral  which  will  require  a 
series  of  clinical  trials,  for  which  there  is  little  regulatory  guidance  or  precedence.  At  this  stage  these 
clinical trial protocols are still at the development stage; however, initial focussed studies will provide data 
to inform the design and implementation of regulatory studies.  

Whilst there can be no guarantee at this stage that these trials will be approved by the regulatory agencies 
and that it will be possible to complete them, any risks are minimised by the fact that the studies are built 
upon the existing data on SNG001, consider the regulatory environment for antivirals, include input from 
regulatory and clinical development experts, as well as advice from Key Opinion Leaders and potential 
Investigators. Regulatory agency scientific advice will be sought for those studies that might be novel or 
form a key part of the regulatory pathway to an eventual marketing authorisation application. 

Pre-clinical testing and/or clinical trials fail to generate positive data 
There  is  a  high  failure  rate  in  the  development  of  pharmaceuticals  and  there  is  a  substantial  risk  of 
adverse, undesirable, unintended or inconclusive results from pre-clinical testing or clinical trials, which 
may substantially delay, halt entirely or make uneconomic any further development of SNG001 and may 
prevent or limit its commercial use. 

The  pre-clinical  and  clinical  trial  data  that  has  previously  been  generated,  as  well  as  other  scientific 
evidence, supports the rationale for the proposed clinical trials. The programme of clinical studies follows 
a logical development path with focussed initial studies providing data which can be used to appropriately 
design key regulatory studies to reduce risks of failure.   

Clinical trials overrun 
There are a number of factors which may lead to delays, including but not limited to: (i) delays to regulatory 
approvals;  (ii)  variations  in  labelling  and  other  regulatory  requirements  between  countries;  (iii)  dealing 
with protocol changes; and (iv) difficulty in finding suitable sites and patients, including competition for 
patients from competing clinical trials. 

If  any  of  the  above  circumstances  or  events  occur,  then  delays  may  impact  the  clinical  development 
programme timetable, which in turn may also have cost and/or ultimately commercial implications. 

The Group seeks to mitigate these risks through ongoing risk assessment, close project management, 
thorough selection procedures of all key suppliers (including trial sites), and regular ongoing contact with 
sites and other key vendors throughout trials.  

11 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
The regulatory approval processes of the MHRA, EMA, FDA and other comparable regulatory 
agencies may be lengthy, time-consuming and unpredictable 
The  Group’s  future  success  is  dependent  upon  its  ability  to  develop  successfully,  obtain  regulatory 
approval  for,  and  then  successfully  commercialise  SNG001,  which  it  may  do  independently  or  in 
partnership with another pharmaceutical company. Even if SNG001 is successful in clinical trials, there 
can be no assurance it will receive regulatory approval at all or in a timely manner. A drug which has 
received approval in one territory may not succeed in getting approval in other territories and regulators 
in  different  jurisdictions  may  seek  different  criteria  and  endpoints  in  order  for  regulatory  approval  and 
marketing authorisations to be granted.  

The Group takes the advice of specialist regulatory advisers and maintains an on-going dialogue with 
regulators. 

Commercial risk 
There  can  be  no  guarantee  that  the  Group  will  succeed  in  securing  and  maintaining  the  necessary 
contractual relationships with commercialisation partners for its programmes under development. Even if 
programmes are successfully out-licensed and pharmaceutical products are brought to the market by a 
partner, there is no guarantee that such products will succeed in the marketplace. 

There are a number of competing antiviral therapeutics at different stages of development 
There are a number of competing therapeutics for antiviral applications at varying stages of development, 
which may be brought to market more quickly than SNG001 or prove to be more effective, desirable or 
cheaper. Some of the Group’s competitors have substantially greater financial and other resources. There 
can  therefore  be  no  assurance  that  competitors  will  not  succeed  in  developing  products  which  would 
render SNG001 non-competitive. 

Currently, antivirals in development are largely targeting the virus itself and are mainly specific to a single 
virus. The host-directed, virus agnostic mode of action of SNG001 means it has broader potential utility 
and fewer direct competitors. The large market for respiratory viral diseases, and potential for new viruses 
and  variants,  means  there  are  likely  to  be  opportunities  for  a  number  of  products  to  be  commercially 
available  before  any  significant  market  saturation.  The  Group  continuously  monitors  the  competitive 
environment and medical need to appropriately target and refine the development and future commercial 
strategies.    

Synairgen is dependent on a small team of key personnel and scientific and clinical 
collaborators 
The  Group’s  success  is  highly  dependent  on  the  expertise  and  experience  of  a  small  team  of  key 
personnel and scientific and clinical advisers/contractors. While the Group has entered into employment 
and  other  agreements  with  each  of  these  key  personnel,  the  retention  of  such  personnel  cannot  be 
guaranteed. Should key personnel leave or no longer be party to agreements or collaborations with the 
Group,  the  Group’s  business  prospects,  financial  condition  and/or  results  of  operations  could  be 
adversely affected.  

To mitigate  this risk, the Group contracted  with certain key partners to provide services to the Group, 
including CRO services, regulatory affairs consultants and clinical management services.  

Manufacturing complexity 
SNG001  beta  Interferon-1a  is  expressed  as  a  recombinant  protein  using  CHO  cells.  As  a  biological 
product  the  drug  substance  manufacturing  process  is  well  controlled  to  ensure  product  quality 
consistency. The purified drug substance is formulated and filled under sterile conditions to manufacture 
drug product.  

Failure of a manufacturing batch due to process error or product quality may delay the timing for clinical 
resupply as well as deplete drug substance stocks. 

Project  risk  is  mitigated  through  the  close  involvement  of  experienced  CMC  and  laboratory  staff, 
combined with additional specialist consultants. This extends into careful selection and management of 
the drug product Contract Manufacturing Organisation.  

12 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
The Group is dependent on third party supply, manufacturing and clinical service relationships 
In common with other drug developers of similar size, the Group engages the expertise and resources of 
third parties in a number of key areas including: (i) the conduct of clinical trials; (ii) the manufacture, scale-
up,  fill/finish,  analytical  testing  and  supply  of  SNG001;  and  (iii)  the  manufacture  and  supply  of  the 
nebuliser.  Critical  and  complex  aspects  of  the  Group’s  business,  including  ownership  of  the  drug 
substance cell line, are therefore in the hands of third parties over whom the Group has limited control. 
The Group cannot guarantee that those third parties or their suppliers (including suppliers of raw materials 
and  components  necessary  for  manufacturing  activities)  will  be  able  to  perform  their  contractual  and 
regulatory obligations satisfactorily or on time.  

Default, delay, non-compliance with law and regulation or other sub-optimal performance by a third party 
may adversely affect the Group’s business plans and prospects. 

Regulatory  requirements  for  pharmaceutical  products  tend  to  make  the  substitution  of  counterparties 
costly and time-consuming. Alternative suppliers may not be able to manufacture products effectively, on 
time or obtain the necessary manufacturing licences from applicable regulatory authorities. 

The Group seeks to minimise risk by holding regular meetings with key suppliers and the use of internal 
staff, project managers and other consultants to manage the relationships.  

Intellectual property 
The commercial success of the Group depends on its  ability to obtain patent and other market-related 
protection for its products in the US, Europe and elsewhere and to preserve the confidentiality of its know-
how. There is no guarantee that patent applications will succeed or be broad enough to provide protection 
for the Group’s intellectual property rights and exclude competitors with similar pharmaceutical products. 
The success of the Group is also dependent on non-infringement of patents, or other intellectual property 
rights, held by third parties. Competitors and third parties may hold intellectual property rights which the 
Group  may  not  be  able  to  license  upon  favourable  terms,  potentially  inhibiting  the  Group’s  ability  to 
develop  and  exploit  its  own  products.  Litigation  may  be  necessary  to  protect  the  Group’s  intellectual 
property, which may result in substantial costs. 

The Group seeks to reduce this risk by working with patent attorneys and other advisors to maximise in-
market protection where appropriate, and by minimising disclosure to third parties. 

Funding risk 
The Group continues to consume cash resources. Until the Group generates positive net cash inflows 
from successful out-licensing transactions and commercialisation of its products, it remains dependent 
upon securing funding through the injection of equity capital or from collaborations with pharmaceutical 
companies. The Group may not be able to generate positive net cash flows in the future or attract such 
additional  funding  required  on  suitable  terms,  or  at  the  time  it  is  needed.  In  such  circumstances,  the 
Group’s programmes may be delayed or cancelled and the business operations curtailed. 

The  Group  seeks  to  reduce  this  risk  through  tight  financial  control,  prioritising  programmes  which  will 
generate the best returns, and keeping shareholders informed on progress.  

Insurance risk 
The Group may not be able to procure adequate insurance cover to enable it to continue its operations. 

Cyber-attack or IT systems failure 
The  Group  is  at  risk  of  cyber-attack  or  IT  systems  failure  to  it  or  its  key  suppliers,  which  may  cause 
operational harm, including potential theft or loss of data.  

The Group seeks to minimise this risk by retaining the services of external IT advisers, pursuing suitable 
back-up and security policies, and maintaining Cyber Essentials certification.  

By order of the Board 

Richard Marsden 
Chief Executive Officer 
26 June 2024

13 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Board of Directors 

Simon Shaw 
Non-executive Chairman 
Simon Shaw joined Synairgen as executive Chairman on its inception in June 2003 and became non-
executive Chairman in October of that year. He is Group Chief Financial Officer of Savills plc. He was 
Chief  Financial  Officer  of  Gyrus  Group  PLC  from  2003  until  its  sale  to  Olympus  Corporation  in  2008, 
having  previously  been  Chief  Operating  Officer  of  Profile  Therapeutics  plc  between  1998  and  2003. 
Between 1991 and 1997 he was a corporate financier, latterly at Hambros Bank Limited. He is a Chartered 
Accountant.  

Richard Marsden 
Chief Executive Officer 
Richard  Marsden  joined  Synairgen  in  a  consulting  role  as  General  Manager  in  November  2003,  was 
appointed to the Board as Managing Director in June 2004, and was appointed Chief Executive Officer 
in  September  2009.  Between  1998  and  2003  he  worked  as  Projects  Manager  and  Cystic  Fibrosis 
Business  Development  Manager  at  Profile  Therapeutics  plc,  where  he  managed  the  Cystic  Fibrosis 
business and played a major role in the development of its proprietary pharmaceutical unit, Profile Pharma 
Limited.  Prior  to  this,  he  worked  for  Zimmer  Limited,  Genentech  (UK)  Limited  and  Roche  Products 
Limited. 

Dr Phillip Monk 
Chief Scientific Officer 
Phillip Monk joined Synairgen in October 2006 as Head of Bioscience Development and was appointed 
to  the  Board  as  Chief  Scientific  Officer  in  September  2009.  Phillip  was  previously  Director  of  the 
Respiratory and Inflammation Biology group at Cambridge Antibody Technology (‘CAT’). Prior to joining 
CAT, he worked at Bayer AG within the respiratory disease therapeutic area, focusing on the development 
of novel therapies for asthma, COPD and cystic fibrosis.  

Joseph Colliver  
Chief Financial Officer 
Joseph Colliver joined Synairgen as a Chief Financial Officer in November 2023. Most recently, he has 
held  executive  and  non-executive  directorships  of  listed  early-stage  life  sciences  companies,  where 
Joseph led financial reporting, M&A, strategy, and regulatory / corporate governance. Prior to this, Joseph 
spent ten years in senior leadership roles in the Kantar division of WPP PLC, including CFO at Kantar 
Futures, and Global Commercial Director of TNS, a multi-billion-dollar global market research agency. 
Joseph qualified as a chartered Accountant in the audit practice of Mazars LLP. 

Dr Bruce Campbell 
Non-executive Director 
Bruce Campbell joined Synairgen as a non-executive director in April 2006. He has more than 50 years 
of drug development experience and has developed many drugs in a wide range of indications which are 
now on the market. He currently acts as a consultant to various European companies. Formerly he was 
CSO  at  the  IP  Group,  Senior  VP  of  International  Development  at  Neurocrine  Biosciences,  Inc. 
(‘Neurocrine’). Prior to joining Neurocrine he worked for 27 years at Servier (United Kingdom), latterly as 
Scientific  Director.  In  addition,  he  has  also  been  a  director  and  European  Chairman  of  the  Drug 
Information Association, and a member of the European ICH Safety Working.  

Dr Felicity (Flic) Gabbay 
Non-executive Director 
Flic  Gabbay  joined  Synairgen  as  a  non-executive  director  in  September  2022.  She  has  extensive 
experience  within  the  life  sciences  sector  including  holding  several  senior  and  CEO  positions  in  big 
pharma, biotech and CROs in both Europe and North America. She is Founding and Senior Partner at 
TranScrip  Ltd,  a  contract  drug  development  CRO.  Starting  her  career  as  a  medical  doctor,  Flic  held 
various medical research posts in Europe and the US before moving into the biotechnology sector. She 
is  the  current  President  of  the  Faculty  of  Pharmaceutical  Medicine  for  the  three  Royal  Colleges  of 
Physicians,  a  Fellow  of  the  Academy  of  Medical  Sciences  and  an  Honorary  Fellow  of  the  British 
Pharmacological Society. 

14 

 
 
 
 
 
 
 
 
 
 
 
 
 
Prof. Sir Stephen Holgate CBE 
Non-executive Director 
Stephen Holgate is a co-founder of Synairgen and was appointed a non-executive director in June 2003.  
After  qualifying  in  Medicine  at  Charing  Cross  Hospital  Medical  School,  London  he  has  pursued  an 
academic career leading to his appointment in 1987 to his current position as Medical Research Council 
Clinical Professor of Immunopharmacology at the University of Southampton. His research interests have 
been largely focused on the cellular and molecular mechanisms of asthma that has involved use of both 
epidemiological and genetic approaches. He has published over 1,300 papers in peer-reviewed literature. 
He is Trustee of the Natasha Allergy Research Foundation, Chair of The Kennedy Trust for Rheumatology 
Research and Member of the Natural Environment Research Council. He is Principal Investigator of the 
UKRI/Met Office Clean Air Strategic Priority Fund Champion grant and is Special Advisor to the RCP on 
air quality. He also serves on a number of Advisory Committees in industry and the Research Councils.  

Amanda Radford 
Non-executive Director 
Amanda Radford joined Synairgen as a non-executive director in December 2022. She is currently Deputy 
CFO of BSI Group. She has previously held senior financial positions at companies including Convatec 
Group plc, Pets at Home Vet Group and TalkTalk Telecom Group. She is a Chartered Accountant.

15 

 
 
 
 
 
 
Corporate Governance Statement 

The board of directors of the Company (the ‘Board’) is accountable to the Company’s shareholders for 
good corporate governance and it is the objective of the Board to attain and maintain a high standard of 
corporate governance. As Chairman, it is my primary responsibility to lead the Board effectively and to 
oversee the adoption, delivery and communication of the Company’s corporate governance model.  

In September 2018, the Company adopted the 2018 Quoted Companies Alliance Corporate Governance 
Code (‘QCA Code’) in line with the London Stock Exchange’ AIM Rules for Companies. The QCA Code 
was reissued on 13 November 2023 and the Company will be following the principles set out therein for 
2024.  The  three  themes  for  the  2023  QCA  Code  are:  (1)  deliver  growth;  (2)  maintain  a  dynamic 
management framework; and (3) build trust. 

This Statement, in conjunction with the corporate governance statement published on our website (see: 
www.synairgen.com/investors/corporate-governance-statement/)  follows  the  ten  principles  of  the  2018 
QCA Code and explain how the 2018 QCA Code is applied by the Company.  

Board of directors 
On 31 December 2023, the Board consisted of myself, as the non-executive Chairman, three executive 
directors (Richard Marsden, Dr Phillip Monk and Joseph Colliver), and four non-executive directors (Dr 
Bruce Campbell, Dr Flic Gabbay, Prof. Sir Stephen Holgate and Amanda Radford). 

The responsibilities of the non-executive Chairman and the Chief Executive Officer are clearly divided.  
The non-executive directors bring relevant experience from different backgrounds and receive a fixed fee 
for their services and reimbursement of reasonable expenses incurred in attending meetings.  

Brief biographies for the directors are given on pages 14 and 15. The key experience, skills, qualities and 
capabilities that each director brings to the Board are summarised below: 

Simon Shaw 
Simon is an experienced public company director, having fulfilled both the roles of Chief Financial Officer 
and Chief Operating Officer for listed companies. He has life science company experience and in addition 
to  his  skills  as  a  Chairman,  contributes  strong  financial  and  corporate  finance  skills.  As  an  executive 
director of a FTSE 250 company, he keeps his skill set in these areas up to date. 

Richard Marsden 
Richard  has  worked  in  several  roles  within  the  life  sciences  sector  and  has  experience  of  sales  and 
marketing, clinical trials, project management, business development and general management.  He is 
actively  involved  in  the  design  and  management  of  clinical  trials  and  leads  the  Company’s  business 
development activities. He maintains and develops his skill sets in these areas by regular interaction with 
the Group’s expert advisers and key opinion leaders (‘KOLs’). 

Dr Phillip Monk 
Phillip is a leading scientist in respiratory biology, with experience of managing teams of scientists and 
taking  drugs  through  pre-clinical  and  early  clinical  trials.  His  particular  contribution  to  the  Board  is 
championing  the  identification  and  management  of  new  opportunities  up  to  the  clinical  stage,  and 
maximising  value  from  clinical  trials,  particularly  with  reference  to  biomarker  and  statistical  analysis. 
Phillip regularly interacts with expert advisers/KOLs and attends key relevant medical conferences. 

Joseph Colliver 
Joseph is a Fellow Chartered Accountant with experience as an executive and non-executive director in 
listed  life  sciences  companies,  incorporating  statutory  reporting,  corporate  governance,  and  corporate 
finance. He maintains his skills by attending courses run by accountancy and legal firms, and professional 
bodies. 

Dr Bruce Campbell 
Bruce  has  50  years’  drug  development  experience.  He  has  particular  expertise  in  pre-clinical 
development. Bruce keeps his skill set up to date through his involvement with several other life sciences 
companies either as a director or consultant. 

16 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Dr Flic Gabbay 
Flic is an independent non-executive director and Chair of the Remuneration and Nomination Committee, 
joining the Board in September 2022. She has extensive experience in the life sciences sector including 
holding several senior and CEO  positions in big pharma,  biotech  and contract research organisations 
(‘CRO’) in Europe and North America. 

Prof. Sir Stephen Holgate 
Stephen is a leading academic in respiratory medicine, combining an outstanding knowledge of base and 
clinical  science.  He  has  experience  of  working  with  many  pharmaceutical  companies  and  guides  the 
Board  on  developments  in  the  respiratory  sector.  Stephen  keeps  up  to  date  through  his  ongoing 
involvement with many industry- and government-related organisations as an advisor. 

Amanda Radford 
Amanda is an independent non-executive director and Chair of the Audit Committee. Amanda has held 
senior finance roles in a number of public companies and has significant experience in external reporting, 
financial controls, forecasting and business planning, as well as fundraising and M&A. 

All eight members of the Board bring relevant sector experience in life sciences. Four members of the 
Board have capital markets experience from other companies. The Board has expertise in the following 
key areas: capital markets; discovery and pre-clinical respiratory projects; clinical development; business 
development/licensing and finance. The Board believes that its blend of relevant experience, skills and 
personal qualities and capabilities is sufficient to enable it to successfully execute the current phase of its 
strategy. 

Simon Holden is the Company Secretary. Simon is a corporate lawyer by background and fulfils the role 
of secretary for several other quoted companies, on the Main Market and AIM. The Company Secretary 
reports directly to the Chairman on governance matters. 

Non-executive  directors  are  required  to  attend  monthly  Board  meetings  (‘Scheduled  Board  meetings’) 
and,  where  relevant,  committee  or  Scientific  Advisory  Board  meetings.  Non-executive  directors  are 
required to be available at other times as required for face-to-face, virtual, and telephone meetings with 
the executive team. All members of the executive team work for the Company on a full-time basis; Joseph 
Colliver is a non-executive director of Hellenic Dynamics plc. 

The Board continues to note that it does not yet comply with QCA best practice in that three of its non-
executive directors have been in post for more than nine years. Nevertheless, the Board considers that 
these  directors  remain  functionally  independent,  in  that  they  remain  fully  committed  to  promoting  the 
success  of  the  Company  for  the  benefit  of  shareholders  as  a  whole.  In  line  with  commitments  made 
towards achieving best practice, Dr Flic Gabbay and Amanda Radford were appointed as independent 
non-executive directors in September 2022 and December 2022 respectively, with a view to bringing a 
new  perspective  to  the  Board  together  with  their  respective  expertise  in  biotech  and  finance.  We  will 
continue to assess the effectiveness of the Board and will continue to identify high quality independent 
directors as the Company continues to develop. 

The Board puts all directors up for re-election on an annual basis to enable shareholders to confirm their 
support for the directors and that, in the case of the non-executives, they are considered by shareholders 
as remaining functionally independent. 

The Company does not have a Senior Independent Director but does have two independent directors (Dr 
Flic  Gabbay  and  Amanda  Radford)  which  we  believe  is  appropriate  at  this  stage  of  the  Company’s 
development. 
The Board retains full and effective control of the Group. This includes responsibility for determining the 
Group’s strategy and for approving budgets and business plans to fulfil this strategy. Scheduled Board 
meetings take place monthly, and the Board also meets on any other occasions it considers necessary. 
During the year ended 31 December 2023, the Board met ten times for Scheduled Board meetings. No 
unscheduled Board meetings were held. At each meeting, there was an opportunity for the non-executive 
directors to discuss matters without the executive directors present. 

It is the duty of the Chairman to ensure that all directors are properly briefed on issues arising at Board 
meetings. Prior to each Board meeting, directors are sent an agenda and Board papers for the agenda 

17 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
items  to  be  discussed.  Additional  information  is  provided  when  requested  by  the  Board  or  individual 
directors. In addition, the Board has access to the Company’s professional advisers as necessary. 

The Company Secretary is responsible to the Board for ensuring that Board procedures are followed and 
that the applicable rules and regulations are complied with. All directors have access to the advice and 
services of the Company Secretary, and independent professional advice, if required, at the Company’s 
expense. Removal of the Company Secretary would be a matter for the Board. 

Board performance 
A Board evaluation process led by the Chairman last took place in March 2021. The process identified 
that the principal areas for the Board to address were succession planning and Board diversity. It was 
agreed  that  composition  of  the  Board  should  reflect  a  mix  of  individuals  with  relevant  knowledge, 
independence,  competence,  industry  experience  and  diversity  of  perspectives  to  generate  effective 
challenge, discussion and objective decision-making.  

In 2022, the Company appointed Dr Flic Gabbay and Amanda Radford as independent non-executive 
directors.  The  Board  believes  that  with  these  appointments,  it  has  the  necessary  blend  of  skills, 
experience, personal qualities and capabilities, and a more diverse range of perspectives. The Board will 
continue to evaluate its performance and seek to address any concerns which are raised. 

A  review  of  the  Chairman’s  performance  was  also  carried  out  in  March  2021  by  the  completion  of  a 
questionnaire by other Board members, which concluded that the Chairman was carrying out his duties 
diligently. 

Board committees 
As appropriate, the Board has delegated certain responsibilities to Board committees. 

Audit Committee 
The Audit Committee currently comprises Amanda Radford (Chair), Bruce Campbell and Simon Shaw.  

The  committee  has  primary  responsibility  for  ensuring  that  the  financial  performance  of  the  Group  is 
properly measured and reported on and is compliant with relevant accounting standards. It reviews the 
interim financial information and annual financial statements before they are submitted to the Board. The 
committee reviews accounting policies and material accounting judgements. The committee also reviews, 
and reports on, reports from the Group’s auditors relating to the Group’s accounting controls. It makes 
recommendations to the Board on the appointment of auditors and the audit fee. The committee monitors 
the scope, results and cost-effectiveness of the audit. It has unrestricted access to the Group’s auditors.  

During 2023, the committee met four times. The Audit Committee Report is detailed on pages 26 to 28. 

Remuneration and Nomination Committee 
The  Remuneration  and  Nomination  Committee  currently  comprises  Dr  Flic  Gabbay  (Chair),  Dr  Bruce 
Campbell and Simon Shaw. Dr Flic Gabbay became Chair of the committee on her appointment to the 
Board. The committee is responsible for making recommendations to the Board on remuneration policy 
for  executive  directors  and  the  terms  of  their  service  contracts,  with  the  aim  of  ensuring  that  their 
remuneration, including any share options and other awards, is based on their own performance and that 
of  the  Group  generally.  The  committee  administers  the  Company’s  Long-Term  Incentive  Plan  and 
approves grants thereunder. It also advises on the remuneration policy for the Group’s employees. The 
committee is responsible for all senior appointments that are made within the Group.  

During 2023, the committee met three times. The Directors’ Remuneration Report is detailed on pages 
21 to 25. 

Scientific Advisory Board 
The  Company  established  a  Scientific  Advisory  Board  (‘SAB’)  in  2016.  The  purpose  of  the  SAB  is  to 
provide  strategic  advice  and  input  on  scientific  aspects  of  Synairgen’s  research  and  development 
projects. 

18 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
The SAB currently comprises Dr Phillip Monk (Chair), Dr Bruce Campbell, Dr Flic Gabbay and Synairgen’s 
three academic founders (Professors Sir Stephen Holgate, Donna Davies and Ratko Djukanovic). Other 
external  experts  and  Synairgen  employees  attend  meetings  as  required.  Dr  Bruce  Campbell  is 
responsible for feeding back the outputs from the SAB to the Board. 

Business model and strategy 
As detailed in the Strategic Report on page 4, Synairgen’s strategy is to develop SNG001 as a broad- 
spectrum inhaled antiviral treatment. The key challenges in execution are set  out in the section of the 
Strategic Report entitled Principal risks and uncertainties. 

Corporate culture 
Our purpose is to restore lives with respiratory treatments which treat those most at risk.   

We articulate these values and supporting behaviours as follows: 

•  Together We Pioneer: We pioneer by breaking through barriers, being open and supportive and 

by accentuating the positive. 

•  Together We Care: We care in the way we put patients first, by inspiring passion in others and 

by always being respectful. 

•  Together We Deliver: We deliver by embracing uncertainty, by “making it happen” and by being 

the difference we want to see. 

These values and behaviours are incorporated into the annual performance review process. Through the 
company intranet available to the Group’s staff and regular internal meetings, we are also focused on 
finding, sharing and celebrating stories of these values and behaviours in action. 

Investor relations 
The  directors  seek  to  build  a  mutual  understanding  of  objectives  between  the  Company  and  its 
shareholders by meetings with major institutional investors and analysts after the Company’s preliminary 
announcement of its year-end results and its interim results. For private investors, we conduct interviews 
via  Proactive  Investor  and  maintain  dedicated  subcontract  resource  to  answer  direct  queries.  The 
Company also maintains investor relations pages on its website (www.synairgen.com) to increase the 
amount of information available to investors.  

There is an opportunity at the Annual General Meeting for shareholders to question the Chairman, the 
Chairs of the Audit and Remuneration and Nomination Committees, and the executive directors. Notice 
of the meeting is sent to shareholders at least 21 clear days before the meeting. Shareholders are given 
the opportunity to vote on each separate issue. The Company counts all proxy votes and indicates the 
level of proxies lodged on each resolution, after it has been dealt with by a show of hands or otherwise 
via  poll.  Details  of  the  proxies  lodged  are  also  published  on  the  Company’s  website.  Details  of  the 
resolutions and explanations thereto are included with the notice.  

Internal control and risk management 
The directors are responsible for establishing and maintaining the Group’s system of internal control and 
reviewing its effectiveness. The system of internal control is designed to mitigate, rather than eliminate, 
the  risk  of  failure  to  achieve  business  objectives  and  can  only  provide  reasonable  but  not  absolute 
assurance against material misstatement or loss. 

The main features of the internal control system are as follows: 

•  A control environment exists through the close management of the business by the executive 
directors.  The  Group  has  a  defined  organisational  structure  with  delineated  approval  limits. 
Controls  are  implemented  and  monitored  by  personnel  with  the  necessary  qualifications  and 
experience; 

•  A list of matters reserved for Board approval; 
•  Monthly management reporting and analysis of variances; 
•  Regular financial reforecasts; 
•  Financial risks for each major transaction are identified and evaluated by the Board; and 
•  Standard financial controls operate to ensure that the assets of the Group are safeguarded and 

that proper accounting records are maintained. 

19 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
The Group maintains a summary risk register which is reviewed by the Board on an annual basis.  The 
principal risks and uncertainties facing the Group, with mitigation strategies, are set out in the Strategic 
Report on pages 4 to 13. Project risk management is continually evaluated by weekly project meetings 
and other management tools. IT risk is covered at bi-annual meetings with external IT advisers. A Health 
and Safety report is reviewed by the Board annually. 

Simon Shaw 
Chairman 
26 June 2024 

20 

 
 
 
 
 
 
 
 
 
 
 
Directors’ Remuneration Report 

In  September  2018  the  Company  adopted  the  QCA  Corporate  Governance  Code  which  includes  the 
requirement  to  prepare  a  remuneration  committee  report.  This  report  includes  and  complies  with  the 
disclosure obligations of the AIM Rules. 

Remuneration Committee 
The Company’s remuneration policy is the responsibility of the Remuneration and Nomination Committee 
(the ‘Committee’). The terms of reference of the Committee are outlined in the Corporate Governance 
Statement on pages 16 to 20. Dr Flic Gabbay is Chair of the Committee. Dr Bruce Campbell and Simon 
Shaw are the other members of the Committee.  

The Committee, which is required to meet at least twice a year, met three times during the year ended 
31  December  2023  and  considered  the  pay  of  the  executive  directors  and  ensured  it  understood  pay 
arrangements more broadly across the Group. The Chief Executive Officer and certain executives may 
be invited to attend meetings of the Committee to assist it with its deliberations, but no executive is present 
when his or her own remuneration is discussed. 

During the year, the Committee has been advised on director remuneration by its retained independent 
remuneration  adviser,  FIT  Remuneration  Consultants  LLP.  No  other  advice  has  been  provided  to  the 
Group by this firm during the year.  

Remuneration policy 
(i) Executive remuneration 
The Committee  has a duty to establish a remuneration policy which will enable it to attract and retain 
individuals of the highest calibre to run the Group. Its policy is to ensure that the executive remuneration 
packages of executive directors and the fee of the Chairman are appropriate given performance, scale of 
responsibility, experience, and consideration of the remuneration packages for similar executive positions 
in companies it considers to be comparable. Packages are structured to motivate executives to achieve 
the highest level of performance in line with the best interests of shareholders. A significant element of 
the total remuneration package, in the form of bonus and Long-Term Incentive Plan (‘LTIP’) awards, is 
performance driven.  

Executive remuneration currently comprises a base salary, an annual performance-related bonus, LTIP 
participation,  a  6%  pension  contribution  either  to  the  executive  director’s  individual  money  purchase 
scheme or, as a salary supplement (after deducting an amount to reflect employer’s NICs to ensure that 
the overall cost to the employer is not increased) and typical benefits including family private health cover, 
permanent health and life assurance.  

There have been no salary increases for executive directors since the last review in August 2021 (and 
no  increases  are  anticipated  for  2024)  and  the  executive  director  salaries,  bonus  and  pension 
arrangements remain as follows:  

Richard Marsden 
Dr Phillip Monk 
Joseph Colliver* 
John Ward** 

Salary per annum 
(£000) 
310 
225 
210 
225 

Maximum bonus as a 
% of salary 
100% 
100% 
100% 
100% 

Pension contribution 
as a % of salary 
6% 
6% 
6% 
6% 

*  Joseph  Colliver  was  appointed  as  an  executive  director  and  Chief  Financial  Officer  on  6  November 
2023. 
** John Ward resigned as an executive director and Chief Financial Officer on 3 November 2023.  

Executive directors are also rewarded for improvements in the performance of the Group sustained over 
a period of years in the form of LTIP awards granted on a discretionary basis by the Committee. 

Directors’ remuneration for the year ended 31 December 2023 is set out on page 25 of this report. 

21 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
(ii) Chairman and non-executive director remuneration 
The fee payable to the Chairman was £80,000 per annum and the fee payable to non-executive directors 
was  £40,000.  The  fee  for  chairing  a  committee  was  £5,000.  Of  the  on-going  £250,000  per  annum 
aggregate remuneration payable to the Chairman and non-executive directors, £200,000 is remuneration 
for their appointed services and £50,000 is ascribed to special services performed beyond their normal 
duties on account of the continued increased frequency of Board meetings.  

(iii) Annual bonus plan  
The Company operates a discretionary bonus scheme for executive directors for delivery of exceptional 
performance  against  pre-set  relevant  corporate  objectives,  which  are  subject  to  malus  and  clawback 
provisions within an overall cap of 100% of salary. No bonuses were awarded in respect of 2023. 

(iv) Equity-based incentive schemes 
The Committee strongly believes that long-term equity-based incentive schemes increase the focus of 
employees  in  improving  Group  performance,  while  at  the  same  time  providing  a  strong  incentive  for 
retaining and attracting individuals of a high calibre.  

Long-Term Incentive Plan (‘LTIP’) 
The Synairgen LTIP, comprising conditional (performance-related) share awards (technically structured 
as nominal cost options, pursuant to which participants must pay 1p per share on the exercise of their 
awards) is the sole long-term incentive vehicle for executive directors.  

Senior executives and other employees may be granted an award, which will normally vest if demanding 
performance conditions are achieved over a three-year period and if the grantee remains an employee 
of the Group.  

Grants under the LTIP in any financial year are capped at a maximum of 100% of base salary.  

As  indicated  in  last  year’s  report,  an  LTIP  award  was  made  in  June  2023  during  the  six-week  period 
following the preliminary announcement of the results for the year ended 31 December 2022. As also 
noted in last year’s report, the Committee recognised the significant fall in share price during 2022 and 
therefore, consistent with good practice, reduced the number of shares over which the award was issued 
from the previous level of 50% of salary to 12% for Richard Marsden, and 16% for each of Phillip Monk 
and John Ward. A further LTIP award was made in November 2023 to Joseph Colliver, equivalent to 23% 
of his annual salary. The performance conditions for the awards remain in line with previous grants and 
are set out below.  

The Committee will consider whether to make an LTIP award (the 2024 award) during the six-week period 
following the preliminary announcement of the results for the year ended 31 December 2023.  

Executive directors are expected to retain no fewer than 50% of shares acquired upon vesting of awards 
under the LTIP, net of shares sold to pay taxes, until such time as, in combination with any other shares 
the executives may have acquired, they hold shares with a value equivalent to 100% of base salary. 

All awards will lapse at the end of the applicable performance period to the extent that the applicable 
performance conditions have not been satisfied with no opportunity for retesting. In the event of a “good 
leaver” event or a change of control of the Company, the LTIP awards may vest early, but only to the 
extent that, in the opinion of the Committee, the performance conditions have been satisfied at that time. 
The awards will generally also be subject to a time pro-rated reduction to reflect the reduced period of 
time between the grant of the awards and the time of vesting although this reduction may not be applied 
in certain cases. 

Performance conditions for the 2020-2023 LTIP awards 
The performance conditions for all four awards were the same. The awards are subject to two conditions. 
Firstly, awards will only vest to the  extent  that  the  percentage  increase  in the total shareholder return 
(‘TSR’, being the return earned by a shareholder over the performance period in terms of change in the 
share price and assuming re-investment of any dividends in more shares at the prevailing price on the 
relevant ex-dividend date) of the Company over the three year performance period is equal or greater 
than the percentage increase in the techMARK Mediscience™ Index over the same period as follows:  

22 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
TSR growth over the performance period less 
percentage increase in the techMARK 
Mediscience™ Index over the same period 
Less than 10% 
10% 
20%  
30%  
Performance between the steps 

Vesting percentage of total number of shares 
subject to award 
0% 
25% 
50% 
100% 
Pro-rata on a straight-line basis 

Secondly,  no  award  will  vest  unless  the  average  annual  growth  in  the  TSR  of  the  Company  over  the 
performance period is equal to or greater than RPI plus 2% or, for more than 75% of an award to vest, 
annual average TSR must exceed RPI by at least 5% rather than 2%. 

The  LTIP  awards  made  from  2020  until  the  end  of  2023  are  currently  below  vesting  performance 
conditions. 

TSR Performance 
The  latest  guidelines  from  the  QCA  encourage  companies  to  include  a  chart  showing  its  TSR 
performance  over  the  preceding  10  years  relative  to  a  recognised  index.  While  the  Company  has 
principally  focused  on  the  techMARK  Mediscience™  Index,  it  does  not  formally  publish  a  TSR  based 
index, so the AIM 100 has been used below.  

(v) Service contracts and letters of appointment 
The executive directors have entered into service agreements which can be terminated on 12 months’ 
notice by either party in the case of Richard Marsden, and six months’ notice by either party in the case 
of Phillip Monk and Joseph Colliver.  

During the year ended 31 December 2023, Joseph Colliver held a non-executive directorship of Hellenic 
Dynamics PLC. 

The Chairman  and  non-executive  directors have entered into  letters of appointment for an  initial  fixed 
period  of  12  months,  which  renew  automatically  for  a  further  12-month  period  on  the  anniversary  of 
commencement. The appointment can be terminated on three months’ notice by either party. 

Directors’ interests in share options 
The interests of directors in share options over ordinary shares during the year were as follows: 

23 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Synairgen Long-Term Incentive Plans 

Date of grant 

Notes 

At 1 

January   
2023  

Granted 
during 
the year 

Lapsed 
during the 
year 

At 31 
December 
2023 

Exercise 
price 

Earliest 
exercise date 

Expiry date 

Richard Marsden 
5 April 2018 
4 April 2019 
18 June 2020 
4 June 2021 
5 July 2022 
21 June 2023 

Dr Phillip Monk 
5 April 2018 
4 April 2019 
18 June 2020 
4 June 2021 
5 July 2022 
21 June 2023 

John Ward 
5 April 2018 
4 April 2019 
18 June 2020 
4 June 2021 
5 July 2022 
21 June 2023 

(i) 

Joseph Colliver 
14 November 
2023 

(ii) 

880,903 
772,167 
490,817 
135,626 
534,482 
- 

- 
- 
- 
- 
- 
496,000 

- 
- 
(490,817) 
- 
- 
- 

636,208 
557,679 
354,483 
97,953 
387,931 
- 

- 
- 
- 
- 
- 
480,000 

- 
- 
(354,483) 
- 
- 
- 

685,147 
600,575 
381,749 
105,487 
387,931 
- 

- 
- 
- 
- 
- 
480,000 

- 
- 
(381,749) 
(105,487) 
(387,931) 
(480,000) 

880,903 
772,167 
- 
135,626 
534,482 
496,000 

636,208 
557,679 
- 
97,953 
387,931 
480,000 

685,147 
600,575 
- 
- 
- 
- 

- 

750,000 

- 

750,000 

1p 
1p 
1p 
1p 
1p 
1p 

1p 
1p 
1p 
1p 
1p 
1p 

1p 
1p 
1p 
1p 
1p 
1p 

1p 

5 April 2021 
4 April 2022 
18 June 2023 
4 June 2024 
5 July 2025 
21 June 2026 

5 April 2021 
4 April 2022 
18 June 2023 
4 June 2024 
5 July 2025 
21 June 2026 

5 April 2021 
4 April 2022 
18 June 2023 
4 June 2024 
5 July 2025 
21 June 2026 

4 April 2028 
3 April 2029 
17 June 2030 
3 June 2031 
4 July 2032 
20 June 2033 

4 April 2028 
3 April 2029 
17 June 2030 
3 June 2031 
4 July 2032 
20 June 2033 

4 April 2028 
3 April 2029 
17 June 2030 
3 June 2031 
4 July 2032 
20 June 2033 

14 November 
2026 

13 November 
2033 

(i)  John Ward resigned as Chief Financial Officer on 3 November 2023 
(ii)  Joseph Colliver was appointed as Chief Financial Officer on 6 November 2023. 

There were no other options granted to directors or which were exercised or lapsed during the year. The 
mid-market price of the Company’s shares at 31 December 2023 was 5.98p. During the year then ended, 
the mid-market price ranged from 5.98p to 16.5p. On 30 April 2024 the closing price was 6.9p. 

24 

 
 
 
 
 
             
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Directors’ remuneration 
The remuneration received by directors who served during the years ended 31 December 2023 and 2022 
was as follows: 

£’000 

Notes 

Salary/fee 

Benefits 

Year ended 31 December 2023 
Total fixed 
(incl. 
pension) 

Pension 

Total (excl. 
pension) 

Year ended 31 December 2022 
Total fixed 
(incl. 
pension) 

Pension 

Total (excl. 
pension) 

Executive directors 
Richard 
Marsden 
Dr Phillip Monk 
John Ward 
Joseph Colliver 

(v) 
(vi) 

(i) 

Non-executive directors 
Simon Shaw 
Iain Buchanan 
Dr Bruce 
Campbell 
Dr Felicity 
Gabbay 
Theodora 
Harold 
Prof. Sir 
Stephen 
Holgate 
Amanda 
Radford 
Total 

(iv) 

(iii) 

(ii) 

310 
225 
203 
30 

80 
- 

40 

45 

- 

40 

45 
1,018 

2 
2 
2 
- 

- 
- 

- 

- 

- 

- 

- 
6 

312 
227 
205 
30 

80 
- 

40 

45 

- 

40 

16 
14 
10 
1 

- 
- 

- 

- 

- 

- 

328 
241 
215 
31 

80 
- 

40 

45 

- 

40 

312 
227 
228 
- 

84 
45 

44 

11 

38 

44 

16 
13 
12 
- 

- 
- 

- 

- 

- 

- 

328 
240 
240 
- 

84 
45 

44 

11 

38 

44 

45 
1,024 

- 
41 

45 
1,065 

4 
1,037 

- 
41 

4 
1,078 

(i) 
(ii) 

(iii) 
(iv) 
(v) 
(vi) 

Iain Buchanan resigned as a non-executive director on 1 December 2022. 
Dr  Felicity  Gabbay  was  appointed  as  a  non-executive  director  on  29  September 
2022. 
Theodora Harold resigned non-executive director on 29 September 2022. 
Amanda Radford was appointed as a non-executive director on 1 December 2022. 
John Ward resigned as Chief Financial Officer on 3 November 2023 
Joseph Colliver was appointed as Chief Financial Officer on 6 November 2023. 

The  Company  permits  employees,  including  executive  directors,  to  change  their  pension  provision 
through an election under a flexible benefits arrangement. The reported numbers are before any personal 
elections. 

In respect  of key management personnel (four  executive  directors,  of which  no more  than three were 
active at one time), for the year ended 31 December 2023, the total share-based payment amounted to 
£156,000 (2022: £328,000) and total social security costs were a credit of £63,000 (2022: credit £28,000). 
The 2023 social security costs were a credit on account of the reduction in the LTIP Employer National 
Insurance accrual because of the fall in share price during 2023. 

Total social security costs in respect of the non-executive directors for the year ended 31 December 2023 
were £31,000 (2022: £34,000). 

On behalf of the Board 

Felicity Gabbay 
Chair of the Remuneration and Nomination Committee 
26 June 2024 

25 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Report of the Audit Committee 

Constitution and membership 
The  Audit  Committee  (the  ‘Committee’)  has  primary  responsibility  for  ensuring  that  the  financial 
performance of the Group is properly measured and reported on and is compliant with relevant accounting 
standards. It was established in October 2004 and its terms of reference are outlined in the Corporate 
Governance Statement on page 16. 

Committee membership, meetings and attendance 
The table below shows the number of meetings attended out of the number of meetings members were 
eligible to attend. 

Director 
Amanda Radford (Chair) 
Simon Shaw 
Bruce Campbell 

Attended/eligible to attend 
4/4 
3/4 
4/4 

The  Committee  members  collectively  have  a  wide  range  of  financial,  audit  and  relevant  sector  and 
business  experience  that  enables  the  Committee  to  provide  constructive  challenge  and  support  to 
management. Amanda Radford and Simon Shaw are considered to have recent and relevant financial 
experience.  

Matters covered by the Committee 
The Committee, which is required to meet at least twice a year, met four times during the year ended 31 
December 2023, and covered the following matters: 

•  6 April 2023: preliminary review of the auditor’s findings in relation to the 2022 year-end audit, 
review of the adoption of the going concern basis in the preparation of the financial statements 
for  the  2022  year-end;  update  on  the  valuation  of  Synairgen  plc’s  investment  in  Synairgen 
Research Limited; the accounting for clinical trial costs and the research and development tax 
credit; and review of internal controls and assessment of requirement for internal audit.   

•  25  April  2023:  audit  completion  meeting  for  the  2022  year-end  audit  including  reviews  of:  the 
forecasts  and  assumptions  used  to  derive  the  impairment  loss  in  relation  to  Synairgen  plc’s 
investment in Synairgen Research Limited; the auditor’s final report on the audit; and the annual 
report.  

•  15  September  2023:  review  of  interim  results  including  adoption  of  going  concern  basis  of 
preparation.  The  Committee  reviewed  and  challenged  the  assumptions  within  the  forecast 
including committed spend and cost savings and R&D tax credits; review of BDO report to the 
Committee  covering  scope  of  interim  work,  materiality  and  key  judgements  including  going 
concern assessment and; review of Audit engagement letter and discussion and agreement of 
fees in relation to the interim and full year audit. 

•  1  December  2023:  review  of  BDO  audit  planning  report  including  resourcing,  materiality,  risk 
assessment and key accounting judgements of going concern, Synairgen plc’s investment in the 
Synairgen Research Limited and; TCFD reporting preparedness.  

Post 31 December 2023, the Committee has met twice:  

•  10 April 2024: preliminary review of the auditor’s findings in relation to the 2023 year-end audit 
including  an  update  on  the  adoption  of  going  concern  in  the  preparation  of  the  financial 
statements;  update  on    the  impairment  review  of  Synairgen  PLC’s  investment  in  Synairgen 
Research  Limited;  review  of  the  Group’s  internal  control  procedures;  consideration  of  the 
requirement  of  an  internal  audit  function,  which  due  to  the  size  and  simplicity  of  the  Group’s 
operations combined with the internal control review undertaken by management was deemed 
unnecessary and; review of the Group’s fraud risk assessment.  

•  20 June 2024: audit completion meeting for the  2023 year-end  audit  including reviews of:  the 
adoption of the going concern basis in the preparation of the financial statements for the 2023 

26 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
year-end; the forecasts and assumptions used in the valuation of Synairgen plc’s investment in 
Synairgen Research Limited; the auditor’s final report on the audit; and the annual report. 

BDO,  the  Company’s  auditors,  were  present  at  all  meetings.  John  Ward,  the  Group’s  former  Chief 
Financial  Officer,  or  Joseph  Colliver,  the  Group’s  current  Chief  Financial  Officer,  were  present  at  all 
meetings except for when their performance was being discussed by the Committee. 

Significant accounting judgements 
Impairment review of Synairgen plc’s investment in Synairgen Research Limited 
The Committee considered management’s assessment of the valuation of Synairgen Research Limited 
(SRL) as at 31 December 2023 for impairment purposes.  

The valuation of SRL includes certain significant judgments, including the likelihood of successful product 
approval,  the  costs  of  reaching  approval,  revenue  forecasts,  the  estimated  useful  life  of  a  therapeutic 
product  following  commercialisation  and  the  subsequent  commercial  profitability  of  the  product  once 
approved, together with the post-tax discount rates applied to the risk-adjusted future cash flows. 

The  Committee  challenged  management  on  the  inputs  into  the  valuation  model  and  discussed  the 
appropriateness  of  management’s  assumptions  and  outcome  of  the  impairment  review  with  the 
Company’s auditor.  

Following discussion, the Committee agreed with management’s conclusion that the Parent Company’s 
investment in SRL is not impaired. 

Going concern statement 
The  Committee  considered  management’s  assessment  of  the  Group’s  available  funding  and  forecast 
cash requirements for the going concern period to 31 December 2025, being at least 12 months from the 
date  of  signing  the  financial  statements.  Given  the  stage  of  development  of  the  Group  and  lack  of 
recurring revenues, the Committee challenged management on the appropriateness of the assumptions 
in the cash flow projections in relation to the Group’s plans to  conduct a Phase 2 trial in mechanically 
ventilated patients and applicable fund raise; and the alternative forecast to conduct further pre-clinical 
preparatory work that would produce data to undertake a fund raise in 2025, whilst significantly reducing 
research  and  development,  and  administrative  spend.  Noting  that  the  outcome  of  future  plans  and 
associated fund raises in relation to trials is uncertain, the Committee reviewed management’s forecasts 
of committed and future costs, and the alternative forecast and associated cost saving measures,  and 
whether  there  was  sufficient  cash  available  to  cover  such  expenditure  for  the  duration  of  the  going 
concern period. 

The Committee discussed the assumptions and conclusions of the going concern review with the Group’s 
auditor.  

The Committee agreed with management’s adoption of the going concern basis in the preparation of the 
annual accounts and approved and recommended the draft Going Concern statement to the Board. 

Auditor independence 
All  non-audit  engagements  performed  by  the  external  auditor  are  approved  by  the  Committee  in 
accordance with the Company’s policy as disclosed in Corporate Governance Principle number 9 on the 
Group’s website.  

The  Company  was  compliant  with  the  policy  throughout  2023.  Non-audit  fees  incurred  during  2023 
totalled £17,600 which relates to the review of the interim results for the six months to 30 June 2023. 

27 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Internal audit function 
The Group does not have an internal audit function, but the Committee considers that this is appropriate, 
given the size and relative lack of complexity of the Group’s operations at this stage in its development 
and the continuous review and improvement of the control environment by Management. The Committee 
keeps this matter under review annually.  

On behalf of the Board 

Amanda Radford 
Chair of the Audit Committee 
26 June 2024 

28 

 
 
 
 
 
 
 
 
 
 
 
Directors’ Report  

The directors present their report and the audited financial statements for Synairgen plc (the ‘Company’) 
and its subsidiaries (together the ‘Group’) for the year ended 31 December 2023.  

The review of future developments is covered in the Outlook section of the Strategic Report. Details of 
directors’ remuneration and share options are given in the Directors’ Remuneration Report. 

Research and development 
During the year ended 31 December 2023, the Group has invested £6,531,000 (2022: £14,936,000) in 
research and development activities and a review of this expenditure is included in the Strategic Report.  

Going concern 
The directors  have  prepared financial  forecasts to estimate  the likely cash requirements of the Group 
over the period to 31 December 2025, given its stage of development and lack of recurring revenues. In 
preparing  these  financial  forecasts,  the  directors  have  made  certain  assumptions  with  regards  to  the 
timing and amount of future expenditure over which they have control. The directors consider that they 
have taken a prudent view in preparing these forecasts. 

The directors have identified that the Group will need to raise further funds during 2024 in order to conduct 
the planned Phase 2 clinical trial in mechanically ventilated patients. The ability of the Group to secure a 
fund raise in 2024 cannot be guaranteed, therefore the directors have prepared an alternative forecast 
which maintains a budget for further pre-clinical preparatory work that would produce data to undertake 
a fund raise in 2025, whilst significantly reducing research and development, and administrative spend. 
Should  this  alternative  forecast  be  required,  the  directors  are  confident  of  achieving  savings  in 
expenditure within their control, resulting in the Group having sufficient resources until Q1 2026 without 
the need for a further fund raise, whilst maintaining the principal activity of the Group. 

In  addition,  the  directors  have  considered  the  sensitivity  of  the  financial  forecasts  to  changes  in  key 
assumptions, including, among others, potential cost overruns within anticipated spend.  

After  due consideration  of  these forecasts and current cash resources, including the sensitivity of key 
inputs, the directors consider that the Group has adequate financial resources to continue in operational 
existence for the foreseeable future (being a  period of at least 12 months from the date of this report) 
and, for this reason, the financial statements have been prepared on a going concern basis. 

Treasury policy and financial risk management 
The  Group’s  treasury  and  financial  risk  management  policies  are  set  out  in  note  16  to  the  financial 
statements on pages 52 to 54. 

Dividends 
The directors do not propose the payment of a dividend. 

Substantial shareholdings 
As at 11 June 2023, the Company had been advised of the following shareholder with an interest of 3% 
or more in its ordinary share capital: 

Name of shareholder 

Number of ordinary shares  % of share capital 

TFG Asset Management UK LLP 

58,000,000 

28.8% 

Directors 
The directors of the Company during the year ended 31 December 2023 were: 

Executive directors: 
Richard Marsden (Chief Executive Officer) 
Dr Phillip Monk (Chief Scientific Officer) 
John Ward (Chief Financial Officer) (resigned 3 November 2023) 
Joseph Colliver (Chief Financial Officer) (appointed 6 November 2023) 

29 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Non-executive directors: 
Simon Shaw (Chairman) 
Dr Bruce Campbell 
Dr Felicity Gabbay  
Prof. Sir Stephen Holgate CBE 
Amanda Radford  

Directors’ interests in ordinary shares 
The directors, who held office at 31 December 2023, had the following interests in the ordinary shares of 
the Company: 

Richard Marsden (i) 
Dr Phillip Monk 
John Ward 
Simon Shaw (ii) 
Dr Bruce Campbell (iii), (vii) 
Dr Felicity Gabbay (iv) 
Prof. Sir Stephen Holgate (v), (vii) 
Amanda Radford (vi) 

At 31 December 2023 
Number of shares 

At 1 January 2023 
Number of shares 

995,771 
423,934 
734,092 
1,531,239 
331,554 
- 
911,876 
- 

995,771 
423,934 
734,092 
1,531,239 
331,554 
- 
911,876 
- 

(i)  Richard Marsden’s shareholding includes 184,821 shares held in his pension plan. 
(ii)  Simon Shaw’s shareholding includes 105,516 shares held in his pension plan. 
(iii)  Dr Bruce Campbell’s shareholding includes 41,388 shares owned by his wife, Susan Campbell. 
(iv)  Dr Felicity Gabbay had no shareholding in the Company at her date of appointment (29 September 

2022). 

(v)  Prof.  Sir  Stephen  Holgate’s  shareholding  includes  2,950  shares  owned  by  his  wife,  Elizabeth 

Holgate. 

(vi)  Amanda  Radford  had  no  shareholding  in  the  Company  at  her  date  of  appointment  (1  December 

2022). 

(vii)  Dr  Bruce  Campbell’s  and  Prof.  Sir  Stephen  Holgate’s  shareholdings  at  1  January  2022  were  re-
stated to include their respective subscriptions to the 2020 Open Offer of 8,724 shares (inclusive of 
1,089 shares by Mrs Campbell) and 24,945 shares (inclusive of 1,027 shares by Mrs Holgate) which 
were omitted in error from previous disclosures of shares held. 

Directors’ and officers’ liability insurance 
Qualifying indemnity insurance cover has been arranged in respect of the personal liabilities which may 
be incurred by directors and officers of the Group during the course of their service with the Group. This 
insurance has been in place during the year and to the date of this report. 

Auditors 
All of the current directors have taken all the steps that they ought to have taken to make themselves 
aware  of  any  information  needed  by  the  Company's  auditors  for  the  purposes  of  their  audit  and  to 
establish that the auditors are aware of that information. The directors are not aware of any relevant audit 
information of which the auditors are unaware. 

By order of the Board 

Simon Holden 
Company Secretary 
26 June 2024 

30 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Statement  of  Directors’  Responsibilities  in  Respect  of  the  Annual  Report  and  the  Financial 
Statements  

The directors are responsible for preparing the Annual Report and the financial statements in accordance 
with applicable law and regulations.  

Company law requires the directors to prepare financial statements for each financial year. Under that 
law the directors have elected to prepare the Group financial statements in accordance with UK adopted 
international  accounting  standards  and  the  Company  financial  statements  in  accordance  with  United 
Kingdom Generally Accepted Accounting Practice (United Kingdom Accounting Standards and applicable 
law). Under company law the directors must not approve the financial statements unless they are satisfied 
that they give a true and fair view of the state of affairs of the Group and Company and of the profit or 
loss  of  the  Group  for  that  period.  The  directors  are  also  required  to  prepare  financial  statements  in 
accordance with the rules of the London Stock Exchange for companies trading securities on AIM.   

Select suitable accounting policies and then apply them consistently; 

In preparing these financial statements, the directors are required to: 
• 
•  Make judgements and accounting estimates that are reasonable and prudent; 
• 

State whether the Group financial statements have been prepared in accordance with UK-adopted 
international accounting standards and the Company financial statements in accordance with United 
Kingdom  Generally  Accepted  Accounting  Practice  (United  Kingdom  Accounting  Standards  and 
applicable  law),  subject  to  any  material  departures  disclosed  and  explained  in  the  financial 
statements; and, 
Prepare the financial statements on the going concern basis unless it is inappropriate to presume 
that the Company will continue in business. 

• 

The directors are responsible for keeping adequate accounting records that are sufficient to show and 
explain the Group’s and Company’s transactions and disclose with reasonable accuracy at any time the 
financial position of the Group and the Company and enable them to ensure that the financial statements 
comply with the requirements of the Companies Act 2006. They are also responsible for safeguarding 
the assets of the Group and the Company and hence for taking reasonable steps for the prevention and 
detection of fraud and other irregularities. 

Website Publication 
The directors are responsible for ensuring the annual report and financial statements are made available 
on a website. Financial statements are published on the Group's website in accordance with legislation 
in the United Kingdom governing the preparation and dissemination of financial statements, which may 
vary from legislation in other jurisdictions. The maintenance and integrity of the Group's website is the 
responsibility  of  the  directors.  The  directors'  responsibility  also  extends  to  the  ongoing  integrity  of  the 
financial statements contained therein.  

By order of the Board 

Simon Holden 
Company Secretary 
26 June 2024 

31 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Independent Auditor’s Report to the Members of Synairgen PLC  

Opinion on the financial statements 

In our opinion: 

• 

• 

• 

• 

the financial statements give a true and fair view of the  state of the Group’s and of the Parent 
Company’s affairs as at 31 December 2023 and of the Group’s loss for the year then ended; 
the  Group  financial  statements  have  been  properly  prepared  in  accordance  with  UK  adopted 
international accounting standards; 
the Parent Company financial statements have been properly prepared in accordance with United 
Kingdom Generally Accepted Accounting Practice; and 
the  financial  statements  have  been  prepared  in  accordance  with  the  requirements  of  the 
Companies Act 2006. 

We have audited the financial statements of Synairgen Plc (the ‘Parent Company’) and its subsidiaries 
(the  ‘Group’)  for  the  year  ended  31  December  2023  which  comprise  the  Consolidated  Statement  of 
Comprehensive Income, the Consolidated Statement of Changes in Equity, the Consolidated Statement 
of Financial Position, the Consolidated Statement of Cash Flows, the Parent Company Balance Sheet, 
the Parent Company Statement of Changes in Equity and notes to the financial statements, including a 
summary of material accounting information. 

The  financial  reporting  framework  that  has  been  applied  in  the  preparation  of  the  Group  financial 
statements is applicable law and UK adopted international accounting standards. The financial reporting 
framework  that  has  been  applied  in  the  preparation  of  the  Parent  Company  financial  statements  is 
applicable law and United Kingdom Accounting Standards, including Financial Reporting Standard 101 
Reduced Disclosure Framework (United Kingdom Generally Accepted Accounting Practice). 

Basis for opinion 
We conducted our audit in accordance with International Standards on Auditing (UK) (ISAs (UK)) and 
applicable  law.  Our  responsibilities  under  those  standards  are  further  described  in  the  Auditor’s 
responsibilities for the audit of the financial statements section of our report. We believe that the audit 
evidence we have obtained is sufficient and appropriate to provide a basis for our opinion.  

Independence 
We  remain  independent  of  the  Group  and  the  Parent  Company  in  accordance  with  the  ethical 
requirements  that  are  relevant  to  our  audit  of  the  financial  statements  in  the  UK,  including  the  FRC’s 
Ethical  Standard  as  applied  to  listed  entities,  and  we  have  fulfilled  our  other  ethical  responsibilities  in 
accordance with these requirements. 

Conclusions relating to going concern 
In auditing the financial statements, we have concluded that the Directors’ use of the going concern basis 
of accounting in the preparation of the financial statements is appropriate. Our evaluation of the Directors’ 
assessment of the Group and the Parent Company’s ability to continue to adopt the going concern basis 
of accounting included: 

•  We considered the Directors' method for assessing going concern, including the relevance and 
reliability  of  underlying  data  used  to  make  the  assessment,  and  whether  assumptions  and 
changes  to  assumptions  from  prior  years  are  appropriate  and  where  relevant,  consistent  with 
each  other.  The  assumptions  were  assessed  against  the  Group  and  parent  company’s 
development plans and committed expenditure. 

•  We obtained an understanding of the Directors’ plans for future actions in relation to the going 
concern assessment and considered whether such plans are feasible in the circumstances. 

•  We reviewed the Directors’ sensitivity analysis of the forecasts to the extent of reasonable worst-
case scenarios, solely in relation to their estimates of planned operational costs which are not 
fixed. 

•  We  assessed  the  adequacy  and  appropriateness  of  disclosures  in  the  financial  statements 

regarding the going concern assessment. 

32 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
•  We carried out the above procedures through using our understanding of the business model, 
objectives, strategies and related business risk, the measurement and review of the Group and 
parent company’s financial performance, forecasting and budgeting processes and the Group’s 
risk assessment process.  

Based on the work we have performed, we have not identified any material uncertainties relating to events 
or  conditions  that,  individually  or  collectively,  may  cast  significant  doubt  on  the  Group  and  the  Parent 
Company’s ability to continue as a going concern for a period of at least twelve months from when the 
financial statements are authorised for issue.  

Our responsibilities and the responsibilities of the Directors with respect to going concern are described 
in the relevant sections of this report. 

Overview 

Coverage 

Key audit matters 

Materiality 

100% (2022: 100%) of Group loss before tax 

100% (2022: 100%) of Group total assets 

Assessment of carrying value of 
investments in subsidiaries (parent 
company) 

Group financial statements as a whole 

2023 


2022 


£390,000  (2022:  £800,000)  based  on  4%  (2022:  4%)  of  loss 
before tax 

An overview of the scope of our audit 
Our Group audit was scoped by obtaining an understanding of the Group and its environment, including 
the Group’s system of internal control, and assessing the risks of material misstatement in the financial 
statements.  We also addressed the risk of management override of internal controls, including assessing 
whether  there  was  evidence  of  bias  by  the  Directors  that  may  have  represented  a  risk  of  material 
misstatement. 

Key audit matters 
Key audit matters are those matters that, in our professional judgement, were of most significance in our 
audit of the financial statements of the current period and include the most significant assessed risks of 
material  misstatement  (whether  or  not  due  to  fraud)  that  we  identified,  including  those  which  had  the 
greatest  effect  on:  the  overall  audit  strategy,  the  allocation  of  resources  in  the  audit  and  directing  the 
efforts of the engagement team. These matters were addressed in the context of our audit of the financial 
statements as a whole, and in forming our opinion thereon, and we do not provide a separate opinion on 
these matters. 

33 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
                            
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Key audit matter  

Valuation of 
investments in 
subsidiaries 

Refer to the 
accounting 
policies (pages 44 
to 46) and Note 4 
of the Company 
Financial 
Statements (page 
47) 

Cost of 
investment 
£115.1m (2022: 
£106.4m) 

Impairment 
provision £Nil 
(2022: £66.2m) 

Net carrying value 
£48.9m (2022: 
£40.2m) 

The Parent Company is a holding 
company. Its main investment is 
into a biopharmaceutical company 
focused on the development and 
commercialisation of a broad-
spectrum inhaled antiviral for the 
treatment and prevention of severe  
viral lung infections in high-risk 
patient groups. 

The impairment assessment of the 
carrying value of investments in 
subsidiaries requires significant 
judgement to determine an 
appropriate recoverable amount for 
each investment. Judgement is 
required, as the recoverable 
amount is determined by taking into 
consideration future cash flows in 
relation to the development and 
commercialisation activities of 
Synairgen Research Limited. 

For these reasons we considered 
the carrying value and the related 
disclosures of the investment in 
subsidiaries to be a key audit 
matter. 

How  the  scope  of  our  audit  addressed 
the key audit matter 
Our audit procedures included: 

•  Assessed management’s 

conclusion that an impairment 
indicator existed at the balance 
sheet date. 

•  We obtained management’s 

analysis of the recoverable 
amount for the subsidiary and 
tested whether the calculation of 
the recoverable amount was in 
line with accounting standards. 

•  We assessed the independence, 
objectivity and qualification of 
management’s expert as a valuer. 

•  We have involved our internal 

valuations expert to assess the 
appropriateness of the 
methodology applied as well as to 
support our assessment of certain 
inputs such as the discount rate.  

•  We tested the arithmetic accuracy 
and integrity of the models used 
in the valuation by sample-
checking the formula, assessed 
the reasonableness of the 
discount rates and reviewed the 
methodology applied versus our 
expectations. 

•  For the valuation model’s key 

commercial assumptions, such as 
probability of successful 
development, market for 
therapeutic treatment, expected 
sales price and operating margin, 
we assessed the reasonability by 
agreeing management’s key 
assumptions to their supporting 
evidence such as market 
research studies, pricing and 
benchmarking analysis; we 
challenged whether the 
supporting analysis is appropriate 
against other available market 
data and industry benchmarks. 

34 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Key audit matter  

How  the  scope  of  our  audit  addressed 
the key audit matter 

•  For the valuation model’s 

cashflows up to 
commercialisation, we assessed 
and challenged management’s 
cash flow assumptions regarding 
future development costs 
necessary to be incurred for the 
drug candidate to reach a point of 
commercialisation against 
available third-party benchmark 
as well as costs previously 
incurred. 

•  We assessed whether there 

should have been any reversal of 
the previously recognised 
impairment. 

•  We assessed whether the 

disclosure in the Parent Company 
financial statements met with the 
requirements of the financial 
reporting framework and was 
consistent with management’s 
assessment. 

Key observations 

Based on the procedures performed, we 
consider that the assumptions made by 
management in their impairment 
assessment and the related disclosures 
are not unreasonable.  

Our application of materiality 
We apply the concept of materiality both in planning and performing our audit, and in evaluating the effect 
of  misstatements.  We  consider  materiality  to  be  the  magnitude  by  which  misstatements,  including 
omissions, could influence the economic decisions of reasonable users that are taken on the basis of the 
financial statements.  

In order to reduce to an appropriately low level the probability that any misstatements exceed materiality, 
we  use  a  lower  materiality  level,  performance  materiality,  to  determine  the  extent  of  testing  needed. 
Importantly, misstatements below these levels will not necessarily be evaluated as immaterial as we also 
take  account  of  the  nature  of  identified  misstatements,  and  the  particular  circumstances  of  their 
occurrence, when evaluating their effect on the financial statements as a whole.  

35 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Based on our professional judgement, we determined materiality for the financial statements as a whole 
and performance materiality as follows: 

Group financial statements 

2023 
£000 
390 

2022 
£000 
800 

4% (2022: 4%) of loss before tax. 

Loss before tax is considered to be 
one of the principal considerations for 
the users of the financial statements 
in assessing the financial 
performance of the Group. 

293 

600 

Parent company financial 
statements 

2023 
£000 
195 
4% of loss before 
tax. 

The component 
materiality used is 
lower than the 
materiality we 
would otherwise 
have determined 
using a 
benchmark of 4% 
of loss before tax. 
146 

2022 
£000 
720 

90% of group 
materiality. 

Capped at 90% of 
Group materiality 
given the 
assessment of the 
component’s 
aggregation risk. 

540 

75% of Group materiality considering a number of factors including the expected 
total value of known  and  likely misstatements (based on past  experience and 
other factors) and management’s attitude towards proposed adjustments. 

Materiality 
Basis for 
determining 
materiality 
Rationale for the 
benchmark 
applied 

Performance 
materiality 
Basis and 
rationale for 
determining 
performance 
materiality 

Component materiality 
For the purposes of our Group  audit opinion, we set  materiality  for  each significant component  of the 
Group being the trading subsidiary Synairgen Research Limited, apart from the Parent Company whose 
materiality is set out above. The materiality for this  component was set at £390,000 (2022: £790,000), 
based  on  a  percentage  of  4%  of  loss  before  tax  (2022:  4%  of  loss  before  tax).  In  the  audit  of  this 
component,  we  further  applied  performance  materiality  levels  of  75%  (2022:  75%)  of  the  component 
materiality  to  our  testing  to  ensure  that  the  risk  of  errors  exceeding  component  materiality  was 
appropriately mitigated. 

Reporting threshold   
We agreed with the Audit Committee that we would report to them all individual audit differences in excess 
of £12,000 (2022: £24,000).  We also agreed to report differences below this threshold that, in our view, 
warranted reporting on qualitative grounds. 

Other information 
The directors are responsible for the other information. The other information comprises the information 
included in the Annual Report other than the financial statements and our auditor’s report thereon. Our 
opinion  on  the  financial  statements  does  not  cover  the  other  information  and,  except  to  the  extent 
otherwise explicitly stated in our report, we do not express any form of assurance conclusion thereon. 
Our responsibility is to read the other information and, in doing so, consider whether the other information 
is materially inconsistent with the financial statements, or our knowledge obtained in the course of the 
audit,  or  otherwise  appears  to  be  materially  misstated.  If  we  identify  such  material  inconsistencies  or 
apparent  material  misstatements,  we  are  required  to  determine  whether  this  gives  rise  to  a  material 
misstatement  in  the  financial  statements  themselves.  If,  based  on  the  work  we  have  performed,  we 
conclude that there is a material misstatement of this other information, we are required to report that 
fact. 

We have nothing to report in this regard. 

36 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Other Companies Act 2006 reporting 
Based on the responsibilities described below and our work performed during the course of the audit, we 
are  required  by  the  Companies  Act  2006  and  ISAs  (UK)  to  report  on  certain  opinions  and  matters  as 
described below.   

Strategic 
report and 
Directors’ 
report  

In our opinion, based on the work undertaken in the course of the audit: 

•  The information given in the Strategic report and the Directors’ report for the 
financial year for which the financial statements are prepared is consistent 
with the financial statements; and 

•  The  Strategic  report  and  the  Directors’  report  have  been  prepared  in 

accordance with applicable legal requirements. 

Matters on 
which we are 
required to 
report by 
exception 

In the light of the knowledge and understanding of the Group and Parent Company 
and  its  environment  obtained  in  the  course  of  the  audit,  we  have  not  identified 
material misstatements in the strategic report or the Directors’ report. 

We have nothing to report in respect of the following matters in relation to which the 
Companies Act 2006 requires us to report to you if, in our opinion: 

•  Adequate accounting records have not been kept by the Parent Company, 
or returns adequate for our audit have not been received from branches not 
visited by us; or 

•  The Parent Company financial statements are not in agreement with the 

accounting records and returns; or 

•  Certain disclosures of Directors’ remuneration specified by law are not 

made; or 

•  We have not received all the information and explanations we require for our 

audit. 

Responsibilities of Directors 
As explained more fully in the Directors’ responsibilities statement, the Directors are responsible for the 
preparation of the financial statements and for being satisfied that they give a true and fair view, and for 
such  internal  control  as  the  Directors  determine  is  necessary  to  enable  the  preparation  of  financial 
statements that are free from material misstatement, whether due to fraud or error. 

In preparing the financial statements, the Directors are responsible for assessing the Group’s and the 
Parent Company’s ability to continue as a going concern, disclosing, as applicable,  matters related to 
going  concern  and  using  the  going  concern  basis  of  accounting  unless  the  Directors  either  intend  to 
liquidate the Group or the Parent Company or to cease operations, or have no realistic alternative but to 
do so. 

Auditor’s responsibilities for the audit of the financial statements 
Our objectives are to obtain reasonable assurance about whether the financial statements as a whole 
are free from material misstatement, whether due to fraud or error, and to issue an auditor’s report that 
includes our opinion. Reasonable assurance is a high level of assurance but is not a guarantee that an 
audit conducted in accordance with ISAs (UK) will always detect a material misstatement when it exists. 
Misstatements can arise from fraud or error and are considered material if, individually or in the aggregate, 
they could reasonably be expected to influence the economic decisions of users taken on the basis of 
these financial statements. 

Extent to which the audit was capable of detecting irregularities, including fraud 
Irregularities,  including  fraud,  are  instances  of  non-compliance  with  laws  and  regulations.  We  design 
procedures in line with our responsibilities, outlined above, to detect material misstatements in respect of 
irregularities, including fraud. The extent to which our procedures are capable of detecting irregularities, 
including fraud is detailed below: 

Based on: 

•  Our understanding of the Group and the industry in which it operates; 

37 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
•  Discussion with management and those charged with governance and the Audit Committee; and  

•  Obtaining and understanding of the Group’s policies and procedures regarding compliance with 

laws and regulations.  

We  considered  the  significant  laws  and  regulations  to  be  the  Companies  Act  2006,  the  applicable 
accounting standards, Income tax and VAT legislation, Employment Taxes, Health Safety regulations, 
the Bribery Act 2010, Aim Listing rules and the Data Protection Act 2018.  

The Group is also subject to laws and regulations where the consequence of non-compliance could have 
a  material  effect  on  the  amount  or  disclosures  in  the  financial  statements,  for  example  through  the 
imposition  of  fines  or  litigations.  We  identified  such  laws  and  regulations  to  be  applicable  accounting 
framework and UK tax legislation. 

Our procedures in respect of the above included: 

•  Review  of  minutes  of  meeting  of  those  charged  with  governance  for  any  instances  of  non-

compliance with laws and regulations; 

•  Review of financial statement disclosures and agreeing to supporting documentation; 
• 
•  Discussions with Directors and the Audit Committee regarding known or suspected instances of 

Involvement of tax specialists in the audit; and 

non-compliance with laws and regulations. 

Fraud 
We assessed the susceptibility of the financial statements to material misstatement, including fraud. Our 
risk assessment procedures included: 

•  Enquiry with management and those charged with governance and Audit Committee regarding 

any known or suspected instances of fraud; 

•  Obtaining an understanding of the Group’s policies and procedures relating to: 

o  Detecting and responding to the risks of fraud; and  
o 

Internal controls established to mitigate risks related to fraud.  

•  Review of minutes  of  meeting of those charged with  governance for any known or suspected 

instances of fraud; 

•  Discussion amongst the engagement team as to how and where fraud might occur in the financial 

statements; 

•  Performing analytical procedures to identify any unusual or unexpected relationships that may 

indicate risks of material misstatement due to fraud; and 

•  Considering remuneration incentive schemes and performance targets and the related financial 

statement areas impacted by these. 

Based  on  our  risk  assessment,  we  considered  the  areas  most  susceptible  to  fraud  to  be  significant 
accounting estimates and inappropriate journal entries (management override of controls).  

Our procedures in respect of the above included: 

•  Testing a sample of journal entries throughout the year, which met a defined risk criteria including 
journal  entries  to  cash  outside  the  normal  procurement  cycle,  by  agreeing  to  supporting 
documentation; 
Involvement  of  forensic  specialists  in  the  audit  as  part  of  the  planning  risk  assessment 
procedures; and 

• 

•  Assessing significant estimates made by management for bias including investment valuations 
(as set out in the key audit matters section of the report), R&D tax credits, valuation of share-
based  payments  and  estimates  in  the  cashflow  forecast  relevant  to  the  going  concern 
assessment. 

We  also  communicated  relevant  identified  laws  and  regulations  and  potential  fraud  risks  to  all 
engagement team members who were all deemed to have appropriate competence and capabilities and 
remained alert to any indications of fraud or non-compliance with laws and regulations throughout the 
audit.  

38 

 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
Our  audit  procedures  were  designed  to  respond  to  risks  of  material  misstatement  in  the  financial 
statements, recognising that the risk of not detecting a material misstatement due to fraud is higher than 
the risk of not detecting  one resulting  from  error, as fraud  may involve deliberate concealment by, for 
example,  forgery,  misrepresentations  or  through  collusion.  There  are  inherent  limitations  in  the  audit 
procedures  performed  and  the  further  removed  non-compliance  with  laws  and  regulations  is  from  the 
events and transactions reflected in the financial statements, the less likely we are to become aware of 
it. 

A further description of our responsibilities is available on the Financial Reporting Council’s website at: 
www.frc.org.uk/auditorsresponsibilities. This description forms part of our auditor’s report. 

Use of our report 
This report is made solely to the Parent Company’s members, as a body, in accordance with Chapter 3 
of Part 16 of the Companies Act 2006. Our audit work has been undertaken so that we might state to the 
Parent Company’s members those matters we are required to state to them in an auditor’s report and for 
no other purpose. To the fullest extent permitted by law, we do not accept or assume responsibility to 
anyone other than the Parent Company and the Parent Company’s members as a body, for our audit 
work, for this report, or for the opinions we have formed. 

Alex Stansbury (Senior Statutory Auditor) 
For and on behalf of BDO LLP, Statutory Auditor 
Southampton, UK 

BDO  LLP  is  a  limited  liability  partnership  registered  in  England  and  Wales  (with  registered  number 
OC305127). 

39 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Consolidated Statement of Comprehensive Income 
for the year ended 31 December 2023 

Research and development expenditure 
Other administrative expenses 
Total administrative expenses and loss from 
operations 
Finance income 
Loss before tax 

Tax 
Loss and total comprehensive loss for the period 
attributable to equity holders of the parent  

Notes 

  6 

7 

Year 
ended 

Year 
ended 
31 December  31 December 
2022 
£000 

2023 
£000 

(6,531) 
(3,761) 

(10,292) 
635 
(9,657) 

(14,936) 
(5,364) 

(20,300) 
207 
(20,093) 

1,249 

2,448 

(8,408) 

(17,645) 

Loss per ordinary share 
Basic and diluted loss per share (pence) 

8 

(4.18)p 

(8.76)p 

40 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Consolidated Statement of Changes in Equity 
for the year ended 31 December 2023 

Share 
capital 
£000 
18a 

Share 
premium 
£000 
18b 

Merger 
reserve 
£000 
18c 

Retained 
deficit 
£000 
18d 

Total 

£000 

At 1 January 2022 
Loss and total comprehensive loss for the year 

2,013 
- 

125,245 
- 

483 
- 

(90,741)  37,000 
(17,645)  (17,645) 

Transactions with equity holders of the Group 
Issue of ordinary shares 
Recognition of share-based payments 

At 31 December 2022 
Loss and total comprehensive loss for the year 
Transactions with equity holders of the Group 
Recognition of share-based payments 

1 
- 

- 
- 

- 
- 

- 
919 

1 
919 

2,014 

125,245 

483 

(107,467) 
(8,408) 

20,275 
(8,408) 

- 

- 

- 

790 

790 

At 31 December 2023 

2,014 

125,245 

483 

(115,085) 

12,657 

41 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Consolidated Statement of Financial Position 
as at 31 December 2023 

Assets 
Non-current assets 
Intangible assets 
Property, plant and equipment 

Current assets 
Current tax receivable 
Trade and other receivables 
Other financial assets – bank deposits 
Cash and cash equivalents 

Total assets 

Liabilities 
Current liabilities 
Trade and other payables 

Total liabilities 

Total net assets 

Equity 
Capital and reserves attributable to equity 
holders of the parent 
Share capital 
Share premium 
Merger reserve 
Retained deficit 
Total equity 

31 December  31 December 
2022 
£000 

2023 
£000 

Notes 

9 
10 

7 
12 
13 
14 

102 
26 
128 

1,249 
828 
1,500 
10,516 
14,093 

44 
86 
130 

2,415 
1,308 
3,750 
15,926 
23,399 

14,221 

23,529 

15 

(1,564) 

(3,254) 

(1,564) 

(3,254) 

12,657 

20,275 

17 
17 
18 
18 

2,014 
125,245 
483 
  (115,085) 
12,657 

2,014 
125,245 
483 
  (107,467) 
20,275 

The financial statements on pages 40 to 57 were approved and authorised for issue by the Board of 
directors on 26 June 2024 and signed on its behalf by: 

Richard Marsden 
Chief Executive Officer 

Joseph Colliver 
Chief Financial Officer 

42 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Consolidated Statement of Cash Flows 
for the year ended 31 December 2023 

Cash flows from operating activities 
Loss before tax 
Adjustments for: 
Finance income 
Depreciation of property, plant and equipment 
Amortisation of intangible fixed assets 
Share-based payment charge 
Cash flows from operations before changes in 
working capital 
Decrease in trade and other receivables 
(Decrease) in trade and other payables 
Cash used in operations 
Tax credit received 
Net cash used in operating activities 

Cash flows from investing activities 
Interest received 
Purchase of intangible assets 
Purchase of property, plant and equipment 
Receipt of bank deposits 
Cash paid for deposits 
Net cash generated from/(used in) investing activities 

Cash flows from financing activities 
Proceeds from issue of ordinary shares 
Net cash generated from/(used in) financing activities 

Decrease in cash and cash equivalents 
Cash and cash equivalents at beginning of the year 
Cash and cash equivalents at end of the year 

14 

Year 
ended 
       31 December 
2023 
£000 

Year 
ended 
31 December 
2022 
£000 

Notes 

(9,657) 

(20,093) 

(635) 
73 
11 
790 

(9,418) 
473 
(1,690) 
(10,635) 
2,415 
(8,220) 

642 
(69) 
(13) 
3,750 
(1,500) 
2,810 

- 
- 

(5,410) 
15,926 
10,516 

(207) 
93 
9 
919 

(19,279) 
289 
(4,384) 
(23,374) 
9,088 
(14,286) 

140 
- 
(6) 
- 
(3,750) 
(3,616) 

1 
1 

(17,901) 
33,827 
15,926 

43 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Notes to the Consolidated Financial Statements 
for the year ended 31 December 2023 

1. 

Accounting policies 

Basis of preparation 
The  Group  financial  statements  have  been  prepared  in  accordance  with  UK  adopted  international 
accounting standards in conformity with the requirements of the Companies Act 2006.  

The consolidated financial statements have been prepared on a historical basis. 

The accounting policies adopted are consistent with those of the previous financial year. 

New standards, interpretations and amendments adopted from 1 January 2023  
With effect from 1 January 2023, the Group adopted the amendments to existing standards set out below 
that are effective for an annual period that begins on or after 1 January 2023: 

•  Amendments to IAS 1 and IFRS Practice Statement 2 – Disclosure of Accounting Policies  
•  Amendments to IAS 8 – Definition of Accounting Estimates 

The adoption of these amendments has not had a material impact on the disclosures or on the amounts 
reported in the Group’s financial statements. 

New standards, interpretations and amendments not yet effective 
At the date of approval of these Group financial statements, the Group had not yet applied the following 
new and revised accounting standards, amendments  and interpretations that have been issued by the 
IASB and have been adopted by the UK Endorsement Board (UKEB): 

Effective 1 January 2024: 

•  Amendments to IFRS 16 – Lease Liability in a Sale and Leaseback 
•  Amendments to IAS 1 – Classification of Liabilities as Current or Non-current  

The Group does not expect the adoption of these IFRS amendments will have a material impact on the 
Group in the current period or will have material impact on future reporting periods and on foreseeable 
future transactions. 

The Group financial statements are presented in Sterling. 

Going concern 
The directors  have  prepared financial  forecasts to estimate  the likely cash requirements of the Group 
over the period to 31 December 2025, given its stage of development and lack of recurring revenues. In 
preparing  these  financial  forecasts,  the  directors  have  made  certain  assumptions  with  regards  to  the 
timing and amount of future expenditure over which they have control. The directors  consider that they 
have taken a prudent view in preparing these forecasts. 

The directors have identified that the Group will need to raise further funds during 2024 in order to conduct 
the planned Phase 2 clinical trial in mechanically ventilated patients. The ability of the Group to secure a 
fund raise in 2024 cannot be guaranteed, therefore the directors have prepared an alternative forecast 
which maintains a budget for further pre-clinical preparatory work that would produce data to undertake 
a fund raise in 2025, whilst significantly reducing research and development, and administrative spend. 
Should  this  alternative  forecast  be  required,  the  directors  are  confident  of  achieving  savings  in 
expenditure within their control, resulting in the Group having sufficient resources until Q1 2026 without 
the need for a further fund raise, whilst maintaining the principal activity of the Group. 

In  addition,  the  directors  have  considered  the  sensitivity  of  the  financial  forecasts  to  changes  in  key 
assumptions, including, among others, potential cost overruns within anticipated spend.  

44 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1. 

Accounting policies (continued) 

After due consideration of these forecasts and current cash resources, including the sensitivity of key 
inputs, the directors consider that the Group has adequate financial resources to continue in operational 
existence for the foreseeable future (being a period of at least 12 months from the date of this report) 
and, for this reason, the financial statements have been prepared on a going concern basis. 

Basis of consolidation 
The consolidated financial statements incorporate the financial statements of the Company and entities 
controlled by the Company (as detailed in note 4 to the Parent Company Financial Statements on page 
47)  made  up  to  the  reporting  date.  All  intra-group  transactions,  balances,  income  and  expenses  are 
eliminated  on  consolidation.  The  formation  of  the  Group  arose  from  merger  accounting  and  as  the 
business combination took place prior to 1 July 2006, the date of transition to IFRS, the transaction has 
not been restated as permitted by IFRS 1 “First-time Adoption of International Financial Reporting”. 

Research and development 
All ongoing research expenditure is currently expensed in the period in which it is incurred.  

Due to the regulatory and other uncertainties inherent in the development of the Group’s products, the 
criteria for development costs to be recognised as an asset, as set out in IAS 38 “Intangible Assets”, are 
not met until a product has been submitted for regulatory approval and it is probable that future economic 
benefit will flow to the Group. The Group currently has no such qualifying expenditure. 

Employee benefits 
All employee benefit costs, notably salaries, holiday pay, bonuses and contributions to personal defined 
contribution pension schemes are charged to the consolidated statement of comprehensive income on 
an accruals basis. 

Share-based payments 
Where equity-settled share options are awarded to employees, the fair value of the options at the date of 
grant is charged to the consolidated statement of comprehensive income over the vesting period. Non-
market vesting conditions are taken into account by adjusting the number of equity instruments expected 
to  vest  at  each  reporting  date  so  that,  ultimately,  the  cumulative  amount  recognised  over  the  vesting 
period is based on the number of options that eventually vest. Non-vesting conditions and market vesting 
conditions are factored into the fair value of the options granted. As long as all other vesting conditions 
are satisfied, a charge is made irrespective of whether the market vesting conditions are satisfied. The 
cumulative expense is not adjusted for failure to achieve a market vesting condition. 

Where vested share options are exercised by the participants but settled by the Company net of shares 
withheld to meet the participant’s tax and NIC liabilities (‘net settlement’), the payment to meet such tax 
and  NIC  liabilities  is  treated  as  a  deduction  to  equity  to  the  extent  that  the  payment  equates  to  the 
settlement  date  fair  value  of  the  shares  withheld,  and  in  the  consolidated  statement  of  cash  flows  is 
included within cash flows from financing activities.  

Intangible assets 
Intangible assets are stated at cost less any accumulated amortisation and any accumulated impairment 
losses. Patent costs are amortised over ten years on a straight-line basis and the amortisation cost is 
charged  to  research  and  development  expenditure  in  the  consolidated  statement  of  comprehensive 
income.  

Property, plant and equipment 
Property, plant and equipment are stated at cost less any accumulated depreciation and any accumulated 
impairment losses. Depreciation is provided on a straight-line basis at rates calculated to write off the 
cost of property, plant and equipment less their estimated residual value over their expected useful lives, 
which are as follows: 

Computer equipment: 
Laboratory and clinical equipment: 

3 years 
5 years 

45 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1. 

Accounting policies (continued) 

The carrying values of property, plant and equipment are reviewed for impairment if events or changes 
in circumstances indicate that the carrying value may not be recoverable. 

Inventories 
Raw  materials  inventory  purchased  and  associated  processing/manufacturing  costs,  related  to 
therapeutics  produced  for  clinical  trial  purposes  or  commercial  use  ahead  of  regulatory  approval,  are 
expensed as incurred through research and development expenditure. 

Where inventory manufacturers invoice in advance of the manufacturing activities, the invoice is recorded 
as a prepayment within trade and other receivables. 

Financial instruments 
Financial assets and financial liabilities are recognised on the Group’s consolidated statement of financial 
position when the Group becomes a party to the contractual provisions of the instrument. 

Financial assets 
The Group classifies its financial assets as financial assets held at amortised cost. 

These  assets  arise  principally  from  the  provision  of  goods  and  services  to  customers  (e.g.  trade 
receivables),  but  also  incorporate  other  types  of  financial  assets  where  the  objective  is  to  hold  these 
assets in order to collect contractual cash flows and the contractual cash flows are solely payments of 
principal and interest. They are initially recognised at fair value plus transaction costs that are directly 
attributable to their acquisition or issue and are subsequently carried at amortised cost using the effective 
interest rate method, less provision for impairment.  

The Group's financial assets measured at amortised cost comprise trade and other receivables, other 
financial assets and cash and cash equivalents in the consolidated statement of financial position. Cash 
and cash equivalents includes cash in hand, deposits held at call with banks, and other short term highly 
liquid investments with original maturities of three months or less. 

Financial liabilities 
The Group classifies its financial liabilities as financial liabilities held at amortised cost. Trade payables 
are initially recognised at fair value and subsequently carried at amortised cost using the effective interest 
rate method. 

Taxation 
Income tax is recognised or provided at amounts expected to be recovered or to be paid using the tax 
rates and tax laws that have been enacted or substantively enacted at the reporting date. Research and 
development tax credits and RDEC are included under current assets as current tax receivable and other 
debtors, respectively. 

Deferred tax balances are recognised in respect of all temporary differences that have originated but not 
reversed by the reporting date except for differences arising on: 

• 

Investments in subsidiaries where the Group is able to control the timing of the reversal of the 
difference and it is probable that the difference could not reverse in the foreseeable future; and, 
•  The initial recognition of an asset or liability in a transaction which is not a business combination 

and at the time of the transaction affects neither accounting nor taxable profit. 

The amount of the asset or liability is determined using tax rates that have been enacted or substantively 
enacted  by  the  reporting  date  and  are  expected  to  apply  when  the  deferred  tax  liabilities/(assets)  are 
settled/(recovered). 

Recognition of deferred tax assets is restricted to those instances where it is probable that a taxable profit 
will be available against which the temporary difference can be utilised. Deferred tax balances are not 
discounted. 

46 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
2. 

 Critical accounting estimates and judgements 

Critical accounting estimates, assumptions and judgements are continually evaluated by management 
based on available information and experience. As the use of estimates is inherent in financial reporting, 
actual results could differ from these estimates. 

The directors consider that the research and development tax credit (including RDEC) recognised, which 
amounts to £1.3 million (2022: £2.4 million), is a critical accounting estimate on account of its size and 
the judgements involved in determining which elements of expenditure qualify to be included in the credit. 

3. 

Segmental analysis 

The Group operates in one area of activity, namely drug discovery and development. All assets of the 
Group are located within the United Kingdom. 

4. 

Loss from operations 

The loss from operations has been arrived at after (crediting)/charging: 

Other operating income - RDEC 
Depreciation of property, plant and equipment 
Amortisation of intangible assets 
Short term lease rentals payable: 
 Office and laboratory space 
 Other short term lease rentals  

The fees for the Group’s auditor, BDO LLP, for services provided are 
analysed below: 

Fees payable to the Company’s auditor for the audit of the Group and 
Company financial statements 
Fees payable to the Company’s auditor for other services: 
 The audit of the Company’s UK subsidiary, pursuant to legislation 
 Audit-related assurance services  
Total fees 

2023 
£000 

(59) 
73 
11 

75 
93 

2023 
£000 

51 

34 
18 
103 

2022 
£000 

- 
93 
9 

75 
93 

2022 
£000 

56 

38 
16 
110 

47 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
5.          Employee benefit expense 

The average monthly number of employees (including executive directors) was: 

2023 

2022 

Research 
Administration 

Their aggregate remuneration comprised: 

Wages and salaries 
Social security costs   
Pension costs – defined contribution plans  
Total cash-settled remuneration 
Accrued holiday pay 
Share-based payment 
Total remuneration 

23 
10 
33 

2023 
£000 

2,929 
329 
332 
3,590 
(3) 
790 
4,377 

19 
11 
30 

2022 
£000 

2,649 
151 
309 
3,109 
-) 
919 
4,028 

Note 

(i) 
(ii) 

(iii) 

Note 

(i) 

(ii) 
(iii) 

Social  security  costs  for  2023  comprise  (a)  a  credit  in  respect  of  the  Employer  National 
Insurance accrual for LTIPs of £48,000 (2022: credit £206,000) and (b) a charge in respect 
of wages, salaries and other benefits of £377,000 (2022: charge £357,000). 
This includes cash payments in lieu of pension plan contributions. 
For  the  purpose  of  presentation  in  the  consolidated  statement  of  comprehensive  income, 
remuneration  costs  of  £2,750,000  (2022:  £2,156,000)  are  included  in  research  and 
development  expenditure  and  £1,627,000  (2022:  £1,872,000)  are  included  in  other 
administrative expenses. 

Key management compensation 
The directors represent the key management personnel and details of their remuneration are given in the 
Directors’  Remuneration  Report.  The  following  costs  were  included  in  respect  of  key  management 
personnel (i.e. the executive directors): 

Salaries 
Benefits 
Pension costs – defined contribution plans  
Share-based payment 

Note 

(i) 

2023 
£000 

754 
7 
56 
156 

2022 
£000 

749 
7 
53 
328 

(i) 
(ii) 

This includes payments in lieu of pension plan contributions. 
The total gain on exercise of share options was £nil (2022: £nil). 

Emoluments of highest paid director 
Emoluments for the highest paid director were £328,000 (2022: £328,000). 

Further  information  about  the  remuneration  of  individual  directors  is  provided  in  the  Directors’ 
Remuneration Report on page 25. 

6. 

Finance income and expense 

Finance income represents bank interest receivable. 

48 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
7. 

Taxation 

Current tax 

UK corporation tax credit on loss for the year 
Adjustment in respect of prior years 
Total income tax credit 

2023 
£000 

(1,249) 
- 
(1,249) 

2022 
£000 

(2,415) 
(33) 
(2,448) 

The  tax  assessed  on  the  loss  on  ordinary  activities  for  the  year  is  different  to  the  standard  rate  of 
corporation tax in the UK of 23.52% (2022: 19%). The differences are reconciled below: 

Loss on ordinary activities before tax 
Loss on ordinary activities before tax multiplied by the standard rate of 
corporation tax in the UK 

Effects of: 
Expenses not deductible for tax purposes 
Enhanced research and development relief 
Variable rates on tax losses surrendered for research and development 
tax credit 
R&D expenditure credits 
RDEC 
Movement in unrecognised deferred tax 
Remeasurement of deferred tax for changes in tax rates 
Adjustment in respect of previous years 
Total tax credit for the current year 

2023 
£000 

2022 
£000 

(9,657) 

(20,093) 

(2,271) 

(3,818) 

195 
(985) 

754 
13 
(14) 
1,126 
(67) 
- 
(1,249) 

176 
(1,758) 

737 
10 
(41) 
2,279 
- 
(33) 
(2,448) 

Deferred taxation 
Changes in tax rates and factors affecting the future tax charge  
The Finance Act 2021 was substantively enacted in May 2021 and has increased corporation tax rate 
from 19% to 25% with effect from 1 April 2023. The  deferred taxation balances have  been measured 
using the rates expected to apply in the reporting periods when the timing differences reverse. 
Recognised deferred taxation 

Accelerated capital allowances 
Other temporary differences 
Trading losses 
Charge for the year 

2023 
£000 

6 
(6) 
- 
- 

2022 
£000 

21 
(6) 
(15) 
- 

Unrecognised deferred taxation 
At 31 December 2023 the Group has trading losses carried forward which are available for offset against 
future  profits  of  the  Group  amounting  to  £70,391,673  (2022:  £66,005,000)  and  non-trading  losses  of 
£3,851,103 (2022: £3,908,000). At 31 December 2023 the Group has an unrecognised deferred tax asset 
in respect of these losses of £18,566,463 (2022: £17,478,000). The full utilisation of these losses in the 
foreseeable future is uncertain and no deferred tax asset has therefore been recognised. 

In addition to the deferred tax asset on losses, the Group has a potential future tax deduction on share 
options.  The  additional  tax  deduction  will  crystallise  at  the  point  the  options  are  exercised.  As  the 
utilisation of this additional deduction against  taxable profits in the Group is uncertain, no deferred tax 
asset has been recognised in respect of the future tax deduction on share options. 

49 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
7. 

Taxation (continued) 

The movement on the unrecognised deferred tax asset comprises the following: 

Unrecognised deferred tax asset at the start of the year 
Movement in the year 
Unrecognised deferred tax asset at the year-end  

8. 

Loss per ordinary share 

2023 
£000 

2022 
£000 

(17,744) 
(822) 
(18,566) 

(17,756) 
12 
(17,744) 

2023 

2022 

Loss attributable to ordinary equity holders of the parent company (£000) 
Weighted average number of ordinary shares in issue (000) 
Basic and diluted loss per share (pence)  

(8,408) 
201,375 
(4.18) 

(17,645) 
201,360 
(8.76) 

Basic loss per share is calculated by dividing the loss attributable to ordinary equity holders of the parent 
company by the weighted average number of ordinary shares in issue during the year. 

The loss attributable to ordinary shareholders and weighted average number of ordinary shares for the 
purpose of calculating the diluted earnings per ordinary share are identical to those used for basic loss 
per share. This is because the exercise of share options would have the effect of reducing the loss per 
ordinary share and is therefore antidilutive under the terms of IAS 33.  

9. 

Intangible assets  

Cost 
At 1 January 2022 and 31 December 2022 
Additions 
At 31 December 2023 

Amortisation 
At 1 January 2022 
Charge for the year 
At 31 December 2022 
Charge for the year 
At 31 December 2023 

Net book amount 
At 31 December 2023 
At 31 December 2022 

Patent costs 
£000 

267 
69 
336 

214 
9 
223 
11 
234 

102 
44 

At  31  December  2023  £102,000  (31  December  2022:  £44,000)  of  the  net  book  amount  relates  to 
interferon beta patent costs.  

50 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
10. 

Property, plant and equipment 

Cost 
At 1 January 2022 
Additions  
At 31 December 2022 
Additions  
At 31 December 2023 

Depreciation 
At 1 January 2022 
Charge for the year 
At 31 December 2022 
Charge for the year 
At 31 December 2023 

Net book value 
At 31 December 2023 
At 31 December 2022 

11. 

Leases 

Computer 
equipment 
£000 

Laboratory 
and clinical 
equipment 
£000 

74 
4 
78 
13 
91 

56 
10 
66 
9 
75 

16 
12 

554 
2 
556 
- 
556 

399 
83 
482 
64 
546 

10 
74 

Total 
£000 

628 
6 
634 
13 
647 

455 
93 
548 
73 
621 

26 
86 

During the year ended 31 December 2021, the Group had one lease with its landlord, the University of 
Southampton, which provides the Group with office space and access to laboratory equipment. A two-
year lease was entered into with effect from 1 August 2019. From 1 August 2021 the Group has continued 
to make payments on the same basis pending renegotiation of the lease. Costs since 1 August 2021 are 
accounted for as a short-term lease, applying paragraph 6 of IFRS 16 (i.e. by not recognising a lease 
liability and corresponding right-of-use asset). 

Analysis of lease expense 

Short term lease expense 
Charge to operating loss 
Charge to loss before taxation  

12. 

Trade and other receivables 

Amounts receivable within one year: 
Other tax and social security 
Prepayments and accrued income 
Other debtors 

2023 
£000 

168 
168 
168 

2023 
£000 

154 
594 
80 
828 

2022 
£000 

168 
168 
168 

2022 
£000 

231 
1,073 
4 
1,308 

51 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
13. 

Other financial assets – bank deposits 

Amounts receivable within one year 

Sterling fixed rate deposits of greater than three months maturity at 
inception 

14. 

Cash and cash equivalents 

Cash at bank and in hand 
Sterling fixed rate deposits of three months’- or less maturity at inception 

15. 

Trade and other payables 

Trade payables 
Social security and other taxes 
Accrued expenses and deferred income 

16. 

Financial instruments 

Financial assets 
Amortised cost 
Trade and other receivables 
Other financial assets – bank deposits (less than 
one year) 
Cash and cash equivalents (less than one year) 
Total  

Financial liabilities 
Other financial liabilities 
Trade and other payables (less than one year) 
Total 

2023 
£000 

2022 
£000 

1,500 

3,750 

2023 
£000 

10,516 
- 
10,516 

2023 
£000 

592 
180 
792 
1,564 

2022 
£000 

11,176 
4,750 
15,926 

2022 
£000 

548 
206 
2,500 
3,254 

2023 
Book and 
fair value 
£000 

2022 
Book and 
fair value 
£000 

Notes 

(i) 

138 

71 

1,500 
10,516 
12,154 

3,750 
15,926 
19,747 

(ii) 

1,385 
1,385 

3,048 
3,048 

(i)  Trade and other receivables shown above excludes prepayments and other taxes, which are not 

a contractual right to receive cash, amounting to £690,000 (2022: £1,237,000). 

(ii)  Trade and other payables shown above excludes amounts due in respect of social security and 
other taxes, which are not a contractual obligation to pay cash,  amounting to £180,000 (2022: 
£206,000). 

The objective of holding financial instruments is to have access to finance for the Group’s operations and 
to  manage  related  risks.  The  main  risks  arising  from  holding  these  instruments  are  interest  rate  risk, 
liquidity risk, credit risk and currency risk.  

52 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
16. 

Financial instruments (continued) 

Interest rate risk 
The Group’s deposit balances are subject to the risk of fluctuating base rates. Interest rate risk profile of 
financial assets, excluding short-term debtors: 

Floating rate  Fixed rate 

2023 
Total 

Floating rate  Fixed rate 

2022 
Total 

£000 

£000 

£000 

£000 

£000 

£000 

Euro 
Sterling 
US Dollar 

38 
10,460 
18 
10,516 

- 
1,500 
- 
1,500 

38 
11,960 
18 
12,016 

11 
11,147 
18 
11,176 

- 
8,500 
- 
8,500 

11 
19,647 
18 
19,676 

Sensitivity analysis 
It is estimated that an increase of a quarter of one percentage point in interest rates would have decreased 
the Group’s loss before taxation by approximately £39,000 (2022: £56,000).  

Liquidity risk 
The Group’s policy is to maintain adequate cash resources to meet liabilities as they fall due. All Group 
payable balances as at 31 December 2023 and 31 December 2022 fall due for payment within one year.  
Cash balances are placed on deposit for varying periods with reputable banking institutions to ensure 
there is limited risk of capital loss. The Group does not maintain an overdraft facility. 

Credit risk 
The Group’s credit risk is attributable to its banking deposits. The Group follows a risk-averse policy of 
treasury  management.  Sterling  deposits  are  held  with  one  or  more  approved  UK-based  financial 
institutions (HSBC UK Bank plc and National Westminster  Bank Plc, which at 31 December 2023 had 
good  short  term  credit  ratings,  being  at  least  F1  for  Fitch,  P-1  for  Moody’s  and  A-1  for  Standard  and 
Poor’s) and in the Institutional Cash Series plc Institutional Sterling Liquidity Fund managed by BlackRock 
Investment  Management  (UK)  Limited  (rated  at  31  December  2023  as  AAAmmf  by  Fitch,  Aaa-mf  by 
Moody’s  and  AAAm  by  Standard  and  Poor’s).  The  Group’s  primary  treasury  objective  is  to  minimise 
exposure to potential capital losses while at the same time securing prevailing market rates. The Group 
seeks to lessen risk by placing its cash deposits with the three above institutions. 

Currency risk 
During the year  under review, the Group was exposed to Euro and US  Dollar currency movement as 
some of the manufacturing costs and clinical trial costs are denominated in these currencies. To naturally 
hedge against currency movement, the Group purchases these currencies in advance of payment due 
dates. 

Capital structure and funding 
The Group is funded by equity capital, reflecting the early-stage nature of its discovery and development 
programmes. 

The Group considers its capital to be its total  equity, which  at 31 December  2023 amounted to  £12.7 
million (2022: £20.3 million). The Group’s objectives when managing capital are to safeguard the Group’s 
ability to continue as a going concern in order to provide returns to equity holders of the Company and 
benefits to other stakeholders and to maintain an optimal capital structure to reduce the cost of capital.  
The  Group  manages  this  objective  through  tight  control  of  its  cash  resources  and,  upon  reaching 
significant drug development programme milestones (to decrease investment risk), by raising additional 
equity from shareholders to meet its forecast future cash requirements. 

Net funds held by the Group at 31 December 2023 amounted to £12.0 million (2022: £19.7 million) and 
comprised short-term deposits (with original maturities of greater than three months and less than one 
year) and cash and cash equivalents as shown below: 

53 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
16. 

Financial instruments (continued) 

Short-term deposits 

Cash and cash equivalents 

Net funds 

31 Dec 

2023 

2022 

2021 

2020 

2019 

£m 

1.5 

10.5 

12.0 

£m 

3.8 

15.9 

19.7 

£m 

- 

33.8 

33.8 

£m 

- 

75.0 

75.0 

£m 

- 

2.5 

2.5 

The Group did not have any bank borrowings as at 31 December 2023 (2022: £nil). 

There have been ten significant issues of shares raising a total (net of costs) of £127.6 million, with the 
most recent two raising £97.9 million in  March and October 2020. The other major sources of funding 
received by the Group from the formation of the business until 31 December 2023 have been revenues 
from licensing transactions of £9.3 million, research and development tax credits of £20.9 million, bank 
interest of £2.6million, and revenues from collaborative work of £0.8 million. 

17. 

Share capital, share premium and share-based payment 

Note 

Number of 
shares 

Ordinary 
shares of 
1p each  
£000 

Share 
Premium 

Total 

£000 

£000 

At 1 January 2022 
Issue of ordinary shares 
At 31 December 2022 and 31 December 
2023 

(i) 

201,341,825 
33,150 
201,374,975 

2,013 
1 
2,014 

125,245  127,258 
1 
125,245  127,259 

- 

(i) 

33,150 ordinary shares of 1p were issued on 16 June 2022 at par following the  exercise of 
share options under the Company’s LTIP. 

At the Company’s 2015 Annual General Meeting held on 22 June 2015 shareholders passed a special 
resolution  removing  the  restriction  on  the  Company’s  share  capital  and  amending  the  articles  of 
association of the Company so that the number of shares the Company can allot and issue became 
unlimited. 

All issued shares are fully paid. 

54 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
17. 

Share capital, share premium and share-based payment (continued) 

Options 

At  31  December  2023  there  were  options  outstanding  over  18,940,446  un-issued  ordinary  shares, 
equivalent to 9.4% of the issued share capital, as follows: 

Date of grant 

Number of shares 
(i) 

Exercise 
price 

Earliest 
exercise date 

Latest exercise 
date 

5 April 2018 (LTIP)  
4 April 2019 (LTIP) 
4 June 2021 (LTIP) (i) 
4 June 2021 (LTIP) (ii) 
20 October 2021 (LTIP) (i) 
13 December 2021 (LTIP) (i) 
5 July 2022 (LTIP) (i) 
21 June 2023 (LTIP) (i) 
14 November 2023 (LTIP) (i) 

2,822,316 
2,598,996 
600,403 
117,647 
250,497 
54,059 
4,991,741 
5,604,787 
1,900,000 
18,940,446 

1p 
1p 
1p 
1p 
1p 
1p 
1p 
1p 
1p 

5 Apr 2021 
4 Apr 2022 
4 Jun 2024 
4 Jun 2022 
20 Oct 2024 
13 Dec 2024 
5 July 2025 
21 June 2026 
14 Nov 2026 

4 Apr 2028 
3 Apr 2029 
3 June 2031 
3 Jun 2031 
19 Oct 2031 
12 Dec 2031 
4 July 2032 
20 June 2033 
13 Nov 2033 

Notes: 
(i) 
(ii) 

(iii) 

Net of lapsed options 
The  vesting  performance  conditions  for  these  options  are  detailed  in  the  Directors’ 
Remuneration Report on pages 22 to 23.  
The performance conditions for these options are outlined in the note (ii) to the table below. 

55 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
17. 

Share capital, share premium and share-based payment (continued) 

The  Group  has  no  legal  or  constructive  obligation  to  repurchase  or  settle  the  options  in  cash.  The 
movement in the number of share options is set out below: 

Outstanding at start of year 
Granted during the year 
Exercised during the year 
Lapsed during the year 
Number of outstanding options at year-end 

 2023 
Weighted 
average 
exercise 
price 

1p 
1p 
1p 
1p 
1p 

Number 

14,450,882 
8,032,718 
- 
(3,543,154) 
18,940,446 

2022 
Weighted 
average 
exercise 
price 

1p 
1p 
1p 
1p 
1p 

Number 

8,517,282 
6,407,130 
(33,150) 
(440,380) 
14,450,882 

At 31 December 2023, 5,421,312 share options were capable of being exercised, with an exercise price 
of 1p (2022: 5,421,312, with an exercise price of 1p). The options outstanding at 31 December 2023 had 
a  weighted  average  remaining  contractual  life  of  7.6  years  (2022:  7.8  years).  Vesting  conditions  are 
disclosed in the Directors’ Remuneration Report and in note (ii) to the following table. 

The Group  uses a number of share-based  incentive  schemes as detailed above and in the  Directors’ 
Remuneration Report on pages 23 and 24. The fair value per award granted and the assumptions are as 
follows: 

Date of 
grant 
5 Apr 
2018 
4 Apr 
2019 
4 Jun 
2021 
4 Jun 
2021 
20 Oct 
2021 
13 Dec 
2021 
5 Jul 
2022 
21 Jun 
2023 
14 Nov 
2023 

Type 
of 
award 
LTIP 
(i) 
LTIP 
(i) 
LTIP 
(i) 
LTIP 
(ii) 
LTIP 
(i) 
LTIP 
(i) 
LTIP 
(i) 
LTIP 
(i) 
LTIP 
(i) 

Number of shares 

Exercise 
price (p) 

Share 
price at 
date of 
grant 
(p) 

Fair 
value 
per 
option 
(p) 

Award 
life 
(years) 

Risk 
free 
rate 

Expected 
volatility 
rate 

Performance 
conditions 

2,822,316 

2,598,996 

1p 

1p 

13.0p 

7.5p 

12.5p 

6.2p 

600,403 

1p 

160.1p 

138.4p 

117,647 

1p 

160.1p 

159.2p 

250,497 

1p 

167.0p 

149.2p 

54,059 

1p 

190.0p 

168.5p 

4,991,741 

5,604,787 

1,900,000 
18,940,446 

1p 

1p 

1p 

29.0p 

26.1p 

7.5p 

6.2p 

6.5p 

5.5p 

3 

3 

3 

3 

3 

3 

3 

3 

3 

0.90% 

0.70% 

56% 

59% 

Market 

Market 

0.14% 

133% 

Market 

0.14% 

133% 

Non-market 

0.64% 

142% 

Market 

0.32% 

146% 

Market 

1.64% 

177% 

Market 

4.93% 

171% 

Market 

4.20% 

145% 

Market 

56 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
17. 

Share capital, share premium and share-based payment (continued) 

The Company has applied IFRS 2 to all the above share-based payments and the following comments 
apply to these options: 
(i) 
(ii) 

Stochastic valuation methodology was used for these awards. 
Black-Scholes  valuation  methodology  was  used  for  this  award,  which  vests  upon  the 
achievement  of  future  commercial  revenue  targets.  At  31  December  2023,  £nil  has  been 
accrued for this non-market option, in line with our latest assumption that this grant will not vest. 
Expected dividend yield is nil, consistent with the directors’ view that the Group’s model is to 
generate value through capital growth rather than payment of dividends. 
The risk-free rate is equal to the prevailing UK Gilts rate at grant date that most closely matches 
the expected term of the grant. 
Volatility  for  the  grants  made  in  2018  and  2019  was  calculated  by  reviewing  share  price 
movement  over  the  period  of  three  years  prior  to  grant,  excluding  any  large  share  price 
movements  (as  these  were  not  considered  to  be  representative  of  future  expectations  of 
volatility). Volatility for the grants made in 2020 and 2021 were calculated by reviewing share 
price movement over the period of three years prior to grant with no adjustments. 
The  charge  for  the  year  ended  31  December  2023  for  share-based  payment  amounted  to 
£790,000 (2022: £919,000).  

(iii) 

(iv) 

(v) 

(vi) 

18. 

Capital and reserves 

18a Share capital 
Share capital represents the nominal value of shares issued. 

18b Share premium 
Share  premium  represents  amounts  subscribed  for  share  capital  in  excess  of  nominal  value  less  the 
related costs of share issues. 

18c Merger reserve 
The merger reserve represents the reserve arising on the acquisition of Synairgen Research Limited on 
11 October 2004 via a share for share exchange accounted for as a Group reconstruction using merger 
accounting under UK GAAP. 

18d Retained deficit 
The retained deficit represents cumulative net gains and losses recognised in the consolidated statement 
of comprehensive income, adjusted for cumulative recognised share-based payments. 

19. 

Related party transactions and balances 

Details of key management personnel and their compensation are given in note 5 and on page 25 of the 
Directors’ Remuneration Report. A list of the Company’s subsidiaries is shown in note 4 to the Parent 
Company Financial Statements. 

20. 

Other commitments 

At 31 December 2023 the Group had entered into non-cancellable purchase commitments amounting to 
£0.1 million (2022: £0.7 million) in respect of manufacturing-related activities. 

21. 

Events after the reporting date 

As at the time of signing there are no adjusting post balance sheet events. 

57 

 
 
 
 
 
 
 
 
 
 
 
 
 
Parent Company Balance Sheet 
as at 31 December 2023 

Company number: 5233429 

Fixed assets 
Investments 

Current assets 
Debtors 
Other financial assets – bank deposits 
Cash at bank and in hand 

Creditors: amounts falling due within one year 

Net current assets 

Total assets less current liabilities 

Capital and reserves 
Called up share capital 
Share premium account 
Retained deficit 

Shareholders’ funds  

31 December 
2023 
£000 

31 December 
2022 
£000 

Notes 

4 

5 

6 

7 

48,902 

40,200 

252 
1,500 
10,283 

326 
3,750 
15,862 

12,035 

19,938 

(114) 

(123) 

11,921 

19,815 

60,823 

60,015 

2,014 
125,245 
(66,436) 

2,014 
125,245 
(67,244) 

60,823 

60,015 

As permitted by Section 408 of the Companies Act 2006, the Company’s profit and loss account has not 
been included in these financial statements. The Company’s profit for the year ended 31 December 2023 
was £18,000 (2022: loss of £66,622,000). 

The  financial  statements  on  pages  58  to  64  were  approved  and  authorised  for  issue  by  the  Board  of 
directors on 26 June 2024 and signed on its behalf by: 

Richard Marsden  
Chief Executive Officer 

Joseph Colliver  
Chief Financial Officer 

58 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Parent Company Statement of Changes in Equity 
for the year ended 31 December 2023 

At 1 January 2022 
Loss for the year and total comprehensive loss 
Transactions with equity holders of the Company 
Issue of ordinary shares 
Share-based payment credit 
At 31 December 2022 
Profit for the year and total comprehensive profit 
Transactions with equity holders of the Company 
Share-based payment credit 
At 31 December 2023 

Share 
capital 

£000 

Share 
premium 
account 
£000 

Retained  
deficit 

Shareholders’ 
funds 

£000 

£000 

2,013 
- 

125,245) 
-) 

(1,541) 
(66,622) 

125,717) 
(66,622) 

1 
- 
2,014 
- 

-) 
-) 
125,245) 
-) 

-) 
919) 
(67,244) 
18) 

- 
2,014 

-) 
125,245) 

790) 
(66,436) 

1) 
919) 
60,015) 
18) 

790) 
60,823) 

59 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Notes to the Parent Company Financial Statements  
for the year ended 31 December 2023  

1. 

Accounting policies 

Basis of preparation 
The  financial  statements  have  been  prepared  in  accordance  with  Financial  Reporting  Standard  101 
Reduced Disclosure Framework (‘FRS 101’). 

Disclosure exemptions adopted 
In preparing these financial statements the Company has taken advantage of all disclosure exemptions 
conferred by FRS 101. Therefore, these financial statements do not include: 

• 

certain comparative information as otherwise required by international accounting standards in 
conformity with the Companies Act 2006; 
certain disclosures regarding the Company’s capital; 

• 
•  a statement of cash flows; 
• 
• 
•  disclosures of related party transactions with other wholly owned members of the Synairgen plc 

the effect of future accounting standards not yet adopted; 
the disclosure of the remuneration of key management personnel; and, 

group of companies. 

In  addition,  and  in  accordance  with  FRS  101,  further  disclosure  exemptions  have  been  adopted 
because  equivalent  disclosures  are  included  in  the  Company’s  consolidated  financial  statements.  
These financial statements do not include certain disclosures in respect of: 

• 
• 

share-based payments; or 
financial instruments.  

Going Concern 
The directors have prepared financial forecasts to estimate the likely cash requirements over the period 
to 31 December 2025 of the Company and its subsidiaries, to which the Company has confirmed its 
intention  to  provide  financial  support  for  a  period  of  not  less  than  12  months  from  the  date  that  its 
financial statements for the year ended 31 December 2023 are signed, given their stage of development 
and lack of recurring revenues.   

The directors have identified that the Company will need to raise further funds during 2024 in order to 
conduct the planned Phase 2 clinical trial in mechanically ventilated patients. The ability of the Company 
to  secure  a  fund  raise  in  2024  cannot  be  guaranteed,  therefore  the  directors  have  prepared  an 
alternative  forecast  which  maintains  a  budget  for  further  pre-clinical  preparatory  work  that  would 
produce data to undertake a fund raise in 2025, whilst significantly reducing research and development, 
and administrative spend.  Should this alternative forecast be required, the directors are confident  of 
achieving  savings  in  expenditure  within  their  control,  resulting  in  the  Company  having  sufficient 
resources until Q1 2026 without the need for a further fund raise, whilst maintaining the principal activity 
of the Company. 

In addition, the directors have considered  the sensitivity of the financial forecasts to changes in key 
assumptions, including, among others, potential cost overruns within anticipated spend.  

After due consideration of these forecasts and current cash resources, including the sensitivity of key 
inputs,  the  directors  consider  that  the  Company  has  adequate  financial  resources  to  continue  in 
operational existence for the foreseeable future (being a period of at least 12 months from the date of 
this report) and, for this reason, the financial statements have been prepared on a going concern basis. 

Principal accounting policies 
The  principal  accounting  policies  adopted  in  the  preparation  of  the  financial  statements  are  set  out 
below. The policies have been consistently applied to all the years presented. 

60 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1. 

Accounting policies (continued) 

Investments in subsidiary undertakings 
Investments  in  subsidiary  undertakings  where  the  Company  has  control  are  stated  at  cost  less  any 
provision for impairment.  

Financial instruments 
Financial  assets  and  financial  liabilities  are  recognised  on  the  Company’s  balance  sheet  when  the 
Company becomes a party to the contractual provisions of the instrument. 

Financial assets 
The Company classifies its financial assets as financial assets held at amortised cost. 

These assets incorporate types of financial assets where the objective is to hold these assets in order 
to collect contractual cash flows and the contractual cash flows are solely payments of principal and 
interest. They are initially recognised at fair value plus transaction costs that are directly attributable to 
their acquisition or issue and are subsequently carried at amortised cost using the effective interest rate 
method, less provision for impairment.  

The  Company’s  financial  assets  measured  at  amortised  cost  comprise  debtors  and  cash  and  cash 
equivalents in the balance sheet. Cash and cash equivalents includes cash in hand, deposits held at 
call with banks and other short term highly liquid investments with original maturities of three months or 
less. 

Financial liabilities 
The  Company  classifies  its  financial  liabilities  as  financial  liabilities  held  at  amortised  cost.  Trade 
creditors  are  initially  recognised  at  fair  value  and  subsequently  carried  at  amortised  cost  using  the 
effective interest rate method. 

Share-based payments 
When the Company grants options over equity instruments directly to the employees of a subsidiary 
undertaking,  the  effect  of  the  share-based  payment  is  capitalised  as  part  of  the  investment  in  the 
subsidiary as a capital contribution, with a corresponding increase in equity. 

Taxation 
The charge for taxation is based on the loss for the period and takes into account taxation deferred. 

Current tax is measured at amounts expected to be paid using the tax rates and laws that have been 
enacted or substantively enacted by the balance sheet date. Deferred tax balances are recognised in 
respect of all timing differences that have originated but not reversed by the balance sheet date, except 
that the recognition of deferred tax assets is limited to the extent that the Company anticipates making 
sufficient  taxable  profits  in  the  future  to  absorb  the  reversal  of  the  underlying  timing  differences. 
Deferred tax balances are not discounted. 

Share capital 
The Company’s ordinary shares are classified as equity instruments. Financial instruments issued by 
the Company are classified as equity only to the extent that they do not meet the definition of a financial 
liability or financial asset. 

2. 

Critical accounting estimates and judgements 

Critical accounting estimates, assumptions and judgements are continually evaluated by management 
based on available information and experience. As the use of estimates is inherent in financial reporting, 
actual results could differ from these estimates. 

A key area of estimation uncertainty that has the most significant effect on the amounts recognised in 
the financial statements are the assumptions when determining the impairment of investment carrying 
values. Refer to Note 4 – investments, for details. 

61 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
2. 

Critical accounting estimates and judgements (continued) 

The Company holds a significant investment in its subsidiary, Synairgen Research Limited, of £48.9 
million (2022: £40.2 million).  

An assessment was made in respect of indicators of impairment in the carrying value of the Company’s 
investments  in  subsidiaries  as  at  31  December  2023.  If  such  an  indication  exists,  the  recoverable 
amount of the asset, being the higher of the asset’s fair value less costs to sell and value in use, is 
compared to the asset’s carrying value. Any excess of the asset’s carrying value over its recoverable 
amount  is  expensed  to  the  income  statement.  The  assessment  of  the  recoverable  amount  of 
investments  in  subsidiaries  involves  a  number  of  significant  judgements  regarding  the  likelihood  of 
successful product approval, the costs of reaching approval, the estimated useful life of a therapeutic 
product following commercialisation and the subsequent commercial profitability of the product once 
approved. 

The  Company  performed  an  assessment  of  the  recoverable  amount  of  the  investment  in  Synairgen 
Research Limited at 31 December 2023. Synairgen’s share price is an indicator of possible impairment 
in  the  carrying  value  of  the  Parent  Company’s  investment  in  Synairgen  Research  Limited.  The 
recoverable amount was determined with reference to IAS 36 methodology by assessing the value in 
use of the investments based on discounted cash flows. 

The Company concluded that the value in use was greater than the carrying value at 31 December 
2023, and therefore the investment was not impaired (2022: impairment of £66,169,000). Due to the 
inherent estimation uncertainty within the valuation and uncertainty surrounding the commercialisation 
of  the  product,  the  directors  have  taken  the  judgement  not  to  make  any  reversal  of  the  previously 
recognised impairment. The directors will consider reversing the previous impairment should there be 
greater certainty of commercialisation arising from events such as a successful outcome in a clinical 
trial.  It  should  be  noted  that  this  impairment  review  exercise  is  for  accounting  purposes,  therefore  it 
does not seek to derive a market valuation for the Company or its programmes. 

3. 

Profit and loss account  

The  only  employees  of  the  Company  during  2023  and  2022  were  the  executive  directors.    Their 
aggregate remuneration, which is borne by the Company’s subsidiary undertaking Synairgen Research 
Limited, comprised:  

Wages and salaries 
Social security costs 
Pension costs – defined contribution plans  
Total cash-settled remuneration 
Accrued holiday pay 
Share-based payment 
Total remuneration 

Notes 

(i) 
(ii) 

 2023 
£000 

754 
63 
57 
874 
(18) 
156 
1,012 

2022 
£000 

749 
(28) 
53 
774 
(3) 
328 
1,099 

(i) 

(ii) 

The  social  security  charge  for  2023  comprises  (a)  a  credit  in  respect  of  the  Employer 
National Insurance accrual for LTIPs of £36,000 (2022: credit £136,000); and (b) a charge 
in respect of wages, salaries and other benefits of £99,000 (2022: charge £108,000). 
This includes cash payments in lieu of pension plan contributions. 

In respect of directors’ remuneration, the disclosures required by Schedule 5 to the Large and Medium-
sized Companies and Groups (Accounts and Reports) Regulations 2008 are included in the detailed 
disclosures in note 5 to the Group accounts on page 48. 

Auditor’s remuneration is disclosed in note 4 to the Group accounts on page 47. 

62 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
4. 

Investments 

At 1 January 2023 
Capital contribution for the year 
Subsidiary share-based payment 
At 31 December 2023 

Investment in 
subsidiary 
undertakings 
£000 

Capital 
contribution 
£000 

140 
- 
- 
140 

40,060 
7,912 
790 
48,762 

Total 
£000 

40,200 
7,912 
790 
48,902 

The  Company  performed  an  assessment  of  the  recoverable  amount  of  the  investment  in  Synairgen 
Research Limited at 31 December 2023.  

The recoverable amount was determined with reference to IAS 36 methodology by assessing the value 
in use of the investments based on discounted cash flows. The Company concluded that the value in 
use was greater than the carrying value at 31 December 2023, and therefore the investment was not 
impaired (2022: impairment of £66,169,000). 

In undertaking the impairment review, the Company has considered both external and internal sources 
of information, and any observable indications that may suggest that the carrying value of Synairgen 
Research  Limited  may  be  impaired.  Future  cash  flows  are  determined  using  Board-approved 
projections,  based  on  the  current  strategy  being  pursued  by  the  Group  and  Company,  over  the 
estimated development and revenue – generating period, which is in excess of five years. 

These  projections  and  strategic  plans  are  based  on  key  assumptions  using  management  estimates 
and, where applicable, external sources of data and benchmarking.  Given the stage of development 
and inherent uncertainty surrounding the outcome of clinical trials, the forecasts are highly judgemental 
and therefore there is significant risk surrounding the assumptions applied to the future cash flows. The 
key  assumptions  included  development  cost  required  to  achieve  regulatory  approval,  probability  of 
success  of  clinical  trials,  likely  licensing  terms  regarding  milestones  and  royalties,  and  revenue  and 
operating  margins  for  the  projected  period.  The  recoverable  amount  has  been  established  through 
taking the average of two scenarios; one in which the asset is out-licensed to a large pharmaceutical 
company, and another in which the Group undertakes the development and commercialisation itself. 

The  discount  rate  is  estimated  on  a  post-tax  basis  reflecting  the  estimated  cost  of  capital  of  the 
Company. The post-tax cost of capital is 15.1%. Management’s valuation model applies a post-tax cost 
of capital to discount risk-adjusted post-tax cash flows. 

Determining the estimated recoverable amount is judgemental in nature and requires the use of certain 
estimated inputs that represent key sources of estimation uncertainty. It is reasonably possible that the 
estimations and assumptions used in determining the impairment as at 31 December 2023, including 
discount rate  assumptions, may result within the next financial year,  in a material  impairment to the 
carrying  amount  of  the  investment  value.  The  most  sensitive  assumptions  are  considered  to  be  the 
post-tax  cost  of  capital,  and  the  risk  weightings  that  have  been  applied  to  reduce  forecast  future 
cashflows by 33% in the out-licencing scenario, or 50% in the self-development scenario. If the post-
tax cost of capital was increased by 1% the recoverable amount would reduce to £48.3 million; if the 
post-tax cost of capital was decreased by 1% the recoverable amount would increase to £71.7 million. 
If these risk weightings were 10% higher the recoverable amount would decrease to £40.2 million; if the 
risk weightings were 10% lower the recoverable amount would increase to £78.2 million. 

63 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
At 31 December 2023, the Company has an investment in the following subsidiary undertakings: 

Name of company 

Registered address 

Proportion of 
voting rights and 
ordinary share 
capital held 

Nature of 
business 

Synairgen Research 
Limited 

Mailpoint 810, Southampton 
General Hospital, Tremona 
Road, Southampton, SO16 6YD 

100% 

Synairgen Research 
(Ireland) Limited 

12 Fitzwilliam Place, Dublin 2, 
Ireland 

Synairgen Inc 

155 Federal Street, Suite 700, 
Boston, MA 02210, USA 

100% 

100% 

5. 

Debtors 

Other tax and social security 
Prepayments and accrued income 
Amounts due from subsidiary undertaking 

All amounts fall due for payment within one year. 

6. 

Cash and cash equivalents 

Cash at bank and in hand 
Sterling fixed rate deposits of three months’ or less maturity at inception 

7. 

Creditors: amounts falling due within one year 

Trade creditors 
Accruals and deferred income 

8. 

Share capital and share premium 

Drug discovery 
and development 

Pharmaceutical 
commercialisation 

Pharmaceutical 
commercialisation 

2023 
£000 

8 
244 
- 
252 

2022 
£000 

12 
266 
48 
326 

2023 
£000 

10,283 
- 
10,283 

2022 
£000 

11,112 
4,750 
15,862 

2023 
£000 

22 
92 
114 

2022 
£000 

19 
104 
123 

Details of the Company’s share capital, share premium, share option schemes and LTIP can be found 
in note 17 to the Group accounts on pages 54 to 57. 

64 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Corporate Directory 

Company number 
5233429 

Directors 
Executive: Richard Marsden, Dr Phillip Monk, Joseph Colliver 

Non-executive: Simon Shaw (Chairman), Dr Bruce Campbell, Dr Felicity Gabbay, Prof. Sir Stephen 
Holgate CBE, Amanda Radford 

Secretary 
Simon Holden 

Head Office and Registered office 
Mailpoint 810, Southampton General Hospital, Tremona Road, Southampton SO16 6YD 

Telephone and fax: +44 (0) 2380 512 800 

Website 
www.synairgen.com  
E-mail 
info@synairgen.com 

Advisers 

Independent auditor 
BDO LLP 
Level 12, Thames Tower, Station Road, Reading RG1 1LX 

Bankers 
HSBC UK Bank plc 
165 High Street, Southampton SO14 2NZ 

Financial public relations 
ICR Consilium 
85 Gresham Street, London EC2V 7NQ 

Nominated adviser and joint broker 
Cavendish Capital Markets Limited 
One Bartholomew Close, London EC1A 7BL 

Joint broker 
Deutsche Numis  
45 Gresham Street, London EC2V 7BF  

Registrars 
Link Group 
10th Floor, Central Square, 29 Wellington Street, Leeds LS1 4DL  

Solicitors 
Fieldfisher LLP 
Riverbank House, 2 Swan Lane, London EC4R 3TT

65 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Glossary 

Accelerating COVID-19 Therapeutic Interventions and Vaccines (ACTIV) programme 
NIH’s ACTIV programme is a public-private partnership to develop a coordinated research strategy to 
speed up the development of the most promising treatments and vaccine candidates for COVID-19  

ACTIV-2 
A master protocol designed for evaluating multiple investigational agents compared to placebo in 
adults with mild to moderate COVID-19, not requiring hospitalisation  

Acute 
An acute disease is a disease with a rapid onset and/or a short course 

Adverse Event 
An adverse event (AE) can be any unfavourable and unintended sign (including an abnormal 
laboratory finding), symptom, or disease temporally associated with the use of a medicinal 
(investigational) product, whether or not related to the medicinal (investigational) product 

Airways (or bronchial tubes)  
The tubes that carry air in and out of the lungs 

Antiviral 
Any substance that can either destroy viruses or suppress their growth 

Asthma 
A disorder in which the airways become episodically narrowed, leading to wheeze, shortness of 
breath, cough and chest tightness 

Biomarker 
A biochemical feature or facet that can be used to measure the progress of disease or the effects of 
treatment 

Broad-spectrum antiviral 
An agent that acts against a wide range of disease-causing viruses 

Candidate 
A candidate drug is a compound (e.g. small molecule, antibody, etc.) with strong therapeutic potential 
and whose activity and specificity have been optimised 

CAT 
The COPD Assessment Test (CAT) is a patient-completed questionnaire, which assists patients and 
their physicians in quantifying the impact of COPD on the patient’s health and quality of life 

Chronic bronchitis 
An inflammation of the airways accompanied by coughing and production of phlegm.  The symptoms 
are present for at least three months in each of two consecutive years. See COPD 

Chronic disease 
A persistent or long-lasting condition 

Clinical Trial Authorisation or CTA  
An authorisation from the MHRA (see below) to conduct a clinical trial 

Contract Manufacturing Organisation (CMO) 
A company that serves other companies in the pharmaceutical industry on a contract basis to provide 
comprehensive services from drug development through drug manufacturing. 

Contract Research Organisation (CRO) 
A company that provides support to the pharmaceutical industry in the form of research services 
outsourced on a contract basis 

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COPD 
Chronic Obstructive Pulmonary Disease covers two conditions: chronic bronchitis and emphysema.  
COPD usually results from long-term exposure of irritants to the lungs, of which the most prevalent is 
tobacco smoke.  Unlike asthma, where airflow obstruction varies, in COPD airflow obstruction is 
usually irreversible  

Coronavirus 
A virus that can cause respiratory disease such as the common cold or SARS (depending on the type 
of coronavirus) and gastroenteritis    

COVID-19 
Coronavirus disease 2019 is a respiratory illness caused by SARS-CoV-2 

Double-blind 
A double-blind study is one in which neither the patients nor the clinical staff know who is receiving a 
particular treatment 

Drug Product 
The formulated drug substance with excipients. These excipients do not have a therapeutic effect but 
can influence the delivery of the drug substance. The drug product is typically the final marketed 
dosage form of the drug substance for example a tablet or capsule  

Drug Substance 
The unformulated active pharmaceutical ingredient  

Emphysema 
A destructive process involving the air spaces (alveoli) of the lungs, which leads to over- inflation of 
the lung and, when sufficiently advanced, causes breathlessness and lack of oxygenation of blood.  
See COPD 

Endpoints (primary and secondary) 
The primary endpoint of a clinical trial is the outcome or outcomes (based on the drug’s expected 
effects) that establish the effectiveness, and/or safety features, of the drug. It is the endpoint for which 
the trial is powered. Secondary endpoints are additional endpoints, preferably also pre-specified, for 
which the trial may not be powered. These may be selected to demonstrate additional effects after 
success on the primary endpoint. 

Eosinophil 
A type of white blood cell that has a role in allergy and asthma 

European Medicines Agency (EMA) 
The EMA evaluate and supervise medicines for the benefit of public and animal health in the 
European Union (EU) 

FDA 
USA Food and Drug Administration. An American body that is responsible for protecting public health 
by ensuring the safety, efficacy, and security of human and veterinary drugs, biological products, and 
medical devices; and by ensuring the safety of America’s food supply, cosmetics, and products that 
emit radiation 

Fibrosis 
The thickening and scarring of connective tissue, usually as a result of injury 

Interferon beta (IFN-β) 
Interferon beta is a natural protein found in the body which helps to regulate the immune system and 
fight off viruses.  IFN-β is currently marketed by a number of companies as an injectable therapy for 
the treatment of multiple sclerosis 

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Influenza 
A contagious viral infection of the respiratory tract, leading to fever, headaches, sore throat, 
congestion of the nose and body aches 

Investigational New Drug (IND) 
A drug developed by the sponsor that is ready for clinical trials in humans  

In vitro 
Carried out in the laboratory, e.g. in a test tube or culture plate 

In vivo 
Tests, experiments, and procedures that researchers perform in, or on, a whole living organism, such 
as a person, laboratory animal, or plant. 

MHRA 
The Medicines and Healthcare Products Regulatory Agency; a UK government body tasked with 
ensuring that medicines and medical devices work and are safe 

Morbidity 
Incidence or prevalence of a disease 

Multiple sclerosis (MS) 
A disease affecting nerves in the brain and spinal cord, causing problems with muscle movement, 
balance and vision 

Parainfluenza 
A virus that can cause the common cold.  Parainfluenza is also responsible for 75% of croup cases in 
children 

Pathway 
A signalling pathway is a group of molecules that work together in a cell to control one or more cell 
functions  

Phase 2 Clinical Trial 
A study in patients with the aim of making a preliminary determination of the efficacy of a drug to 
provide proof of concept and/or to study drug dose ranges 

Phase 3 Clinical Trial  
A full-scale clinical trial to determine drug efficacy and safety prior to seeking marketing approval 

Phlegm 
See Sputum 

Placebo 
An inactive substance or preparation used as a control/ comparator (in a clinical trial for example) to 
determine the effectiveness of a medicinal drug 

Placebo-controlled 
Placebo-controlled is a trial in which there are two (or more) groups. One group receives the active 
treatment, the other is given the placebo. Everything else is identical between the two groups, so that 
any difference in their outcome can be attributed to the treatment. 

Platform Trial 
A type of prospective, disease-focused, adaptive, randomized clinical trial that compares multiple, 
simultaneous and possibly differently timed interventions against a single, constant control group. 

Pre-clinical 
A stage of drug development preceding human clinical trials 

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Primary endpoint 
The most important measure (endpoint) assessed in a clinical trial 

Protein 
Large molecules made of smaller biological units known as 'amino acids'.  Proteins are responsible for 
the majority of the function and much of the structure of living things, including humans 

Pulmonary 
Relating to, functioning like, or associated with the lungs 

Rhinovirus 
Rhinoviruses are the most common viral infective agents in humans.  The most well-known disease 
caused by rhinoviruses is the common cold 

SARS-CoV-2 
Severe Acute Respiratory Syndrome-Coronavirus 2 is the virus strain that causes COVID-19 

Seasonal Influenza 
Seasonal influenza is a yearly outbreak of influenza infection, caused by influenza virus.  The 
seasonal influenza is somewhat different every year, as influenza viruses are always changing 

Secondary/exploratory endpoint 
The second most important (or additional) measure (or endpoint) assessed in a clinical trial 

Severe asthma 
Asthma which requires treatment with high dose inhaled corticosteroids plus a second controller 
(and/or oral corticosteroids) to prevent it from becoming 'uncontrolled' or which remains 'uncontrolled' 
despite this therapy 

SG015 
A randomised, double-blinded, placebo-controlled study, in COPD patients with and without a 
confirmed respiratory virus infection assessing anti-viral biomarker responses of inhaled SNG001 
compared to placebo 

SG016 Home Trial 
Synairgen’s Phase 2 randomised, double-blind, placebo-controlled trial to determine the safety and 
efficacy of inhaled SNG001 (IFN-β1a for nebulisation) for the treatment of patients with confirmed 
SARS-CoV-2 infection in the home environment  

SNG001 
A formulation of Interferon Beta-1a delivered to the lung using a nebuliser 

Sputum 
The thick mucus which is coughed up by a person. Sputum contains cells and soluble substances 
secreted into the airways (bronchi), some of which can mediate disease if present in amounts 
different to normal. Sputum is also commonly called phlegm 

United States National Institute of Health (US NIH)  
The medical research agency of the USA 

Viral Pneumonia  
Viral pneumonia is a pneumonia caused by a virus. Pneumonia is an infection that causes 
inflammation in one or both of the lungs 

Variant 
It is normal for viruses to change and evolve as they spread between people over time. When these 
changes become significantly different from the original virus, they are known as “variants”  

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Virus or Variant Agnostic 
Not targeted or effective against any one or several viruses or variants, but targeted or effective 
against all viruses or variants. 

Virus 
A virus is a non-living small particle that infects cells in biological organisms.  Viruses can reproduce 
only by invading and controlling other cells as they lack the cellular machinery for self-reproduction 

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Head Office 

Synairgen plc / Synairgen Research Ltd 

Mailpoint 810 

Southampton General Hospital 

Tremona Road 

Southampton 

SO16 6YD 

United Kingdom 

Tel: +44 (0) 23 8051 2800 

Fax: +44 (0) 23 8051 2800 

Company details 

Synairgen plc 

Registered number: 5233429 

Place of registration: England 

Synairgen Research Ltd 

Registered number: 4793696 

Place of registration: England 

The registered office address for both 
companies is: 
Mailpoint 810 
Southampton General Hospital 
Tremona Road 
Southampton 
SO16 6YD 
United Kingdom