Peter Sasieni is a professor of Cancer Epidemiology and joint lead of the Centre for Cancer Screening, Prevention and Early Diagnosis and is Director of the Cancer Research UK Cancer Prevention Trials Unit at Queen Mary University London. He is currently a lead or co- investigator on several large screening projects including the NHS-Galleri trial of GRAIL’s multi-cancer early detection test. He was awarded the 2023 Don Listwin Award for outstanding contribution to cancer early detection.