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Professor O'Hagan obtained his BSc (1969) and PhD (1974) in Statistics from the University of London. Between these two bouts of study, he worked for two years as a practising statistician at the Central Electricity Generating Board. He began his academic career at the University of Dundee in 1973, moving to Warwick University in 1975. He became Professor of Statistics at the University of Nottingham in 1990 and moved to 91̽»¨ in 1999. He has served on the Research Section Committee and the Council of the Royal Statistical Society and read four papers to meetings of the Society. He has been a member of the Peer Review College of the Engineering and Physical Sciences Research Council and chaired its Mathematics Programme Review Panel in 1998. His research is in the theory and applications of Bayesian statistics. On the methodological side, he has interests in model comparison, model uncertainty, conflicting information and inference about functions. He has been involved in numerous applications, particularly in environmental statistics and health economics, and is a Chartered Statistician. In 2000 he formed the Centre for Bayesian Statistics in Health Economics with colleagues in the School of Health and Related Research, and is the Centre's Director.