System1 Group PLC is a marketing and market research consultancy company that provides a variety of tools to help businesses succeed. These tools include a predictive marketing tool that uses crowdsourcing to identify successful concepts and an ad-testing tool that measures emotional impact. The company operates globally and was previously known as BrainJuicer Group PLC until 2017. System1 Group PLC was founded in 1999 and is based in London, UK.