Mr Peter Willson is a leading surgeon specialising in gastrointestinal and hepato-pancreato-biliary (HPB) surgery. He is consultant at Kingston and Parkside Hospital, and honorary consultant at St George's Hospital. His special interests include hernia and laparoscopic surgery and he has written numerous papers on the subject. He has also had a huge influence as a teacher and lecturer, having held and currently holding many positions. He is a member and fellow of a huge number of societies in his field and is considered as one of the main contributors to gastrointestinal research and treatment.