A hospital pharmacist before becoming inaugural Professor of Pharmacy at Leeds, Theo has 35 years of research improving patient information and ‘user testing’ the information with lay people. This led to forming the spin-out company Luto Research, a leading provider of user testing services. Synergies between the University and Luto underpin recent work, notably how best to present benefit and harm information. Currently he is working in policy and practice on making the new clinical trial ‘layperson summaries’ fit-for-purpose. He has a Lifetime Achievement Award from Fédération Internationale Pharmaceutique.