John Weinman is Professor of Psychology as applied to Medicines in the School of Cancer & Pharmaceutical Sciences, and Emeritus Professor at the Institute of Psychiatry, Psychology & Neuroscience in King’s College London. He is also Co-Director of the recently established KCL/KHP Centre for Adherence Research & Education. The main focus of his research has been on the ways in which patients’ beliefs about their illness and treatment affect self-regulation and self-management across a wide range of physical health problems. An increasing part of this work is concerned with understanding the reasons underlying non-adherence to treatment, and in developing effective interventions for improving use of medicines and other recommended treatments. This work has also resulted in the development of widely used measures and cognitively-based interventions, which have been shown to be effective in improving adherence to treatment, recovery and quality of life.