John Deanfield is British Heart Foundation Vandervell Professor of Cardiology at University College Hospital, London, UK. He is also Consultant Cardiologist at the Heart Hospital and Great Ormond Street Hospital, London. Professor Deanfield undertook his undergraduate training at Churchill College, Cambridge, UK and the Middlesex Hospital, London. He subsequently trained at the Hammersmith and Great Ormond Street Hospitals, London.

Professor Deanfield is the Director of the National Centre for Cardiovascular disease Prevention and Outcomes at UCL which incorporates the National Databases for Cardiovascular Outcomes (NICOR). He is a Principle Investigator in a Leducq transatlantic consortium evaluating HDL function in Atherosclerosis. Professor Deanfield chairs the current Joint British Societies (JBS3) new National guidelines for cardiovascular disease prevention.

Professor Deanfield serves on many international advisory boards and is a member of the editorial boards of several major cardiovascular journals. He has published numerous articles in leading medical and scientific journals such as New England Journal of Medicine, Circulation and European Heart Journal. His principal interests are vascular medicine, opportunities for lifetime management of cardiovascular risk and large scale cardiovascular outcomes research.