David is a Professor at Durham University. His research focuses on ageing in the nematode worm C. elegans. He discovered mutations in bacteria that slow C. elegans ageing by altering bacterial metabolism. He co-founded Magnitude Biosciences, which provides research services in C. elegans to companies across the world. A BSRA Trustee from 2014-2019, he was also Chair of the society from 2022 to 2026, and now acts in an Emeritus Chair and advisor role and also trustee for Public Affairs & Strategic Partnerships.