Collister (pictured) has been a research and strategy consultant for the past 15 years, and has worked with clients including FedEx, BP and Airbus.

At Unlimited, he will help the company’s four divisions deliver services for clients using the Human Understanding Lab’s insight approaches, such as its digital analytics platform.

Unlimited formed Human Understanding Lab in 2020 to bring together behavioural science expertise from across its agencies, including Walnut Unlimited and Realise Unlimited.

Collister will work alongside Cristina de Balanzo, Andy Myers, Chris Bland and Stephen Welch to lead the team, which comprises 120 neuro, behavioural and data scientists, technologists and strategic planners.

Tim Hassett, chief executive, Unlimited, said: “Bringing Simon on board for our Human Understanding Lab was a no-brainer. HUL has been instrumental in recent key new pitch wins, and with some major projects with our existing clients.

“I know Simon’s experience will be invaluable in helping further bolster our clients’ businesses.”