Peter Hajek is Professor of Clinical Psychology and Director of the Tobacco Dependence Research Unit at the Wolfson Institute of Preventive Medicine, Queen Mary University of London. His research is concerned primarily with understanding health behaviours, and developing and evaluating both behavioural and pharmacological treatments for dependent smokers and for people with weight problems. Professor Hajek is a member of a number of expert groups, advisory bodies and editorial boards, and has authored or co-authored over 350 publications.