Mr Shaun Preston is a General Surgeon and Head of the Oesophago-Gastric Unit at The Royal Surrey NHS Foundation Trust Hospital. He specialises in Upper GI surgery, laparoscopic (keyhole) surgery, and endoscopy. His areas of interest include the management of reflux, Barrett's oesophagus, oesophageal and gastric cancer, hernia repair, management of gallstones, robotic surgery, and interventional endoscopy including endoscopic ultrasound.

Mr Preston attained his Bachelor of Science (BSc(Hons)) in 1987, Bachelor of Medicine (MB) and Bachelor of Surgery (ChB) in 1990, and Doctor of Medicine (MD) in 1997 from Leeds University. He is a Fellow of the Royal College of Surgeons of England (FRCS(Eng)) since 1996 and received his Intercollegiate Fellowship in General Surgery (Upper GI) (FRCS(Gen)) in 2000, where he was honoured with the ASGBI Gold Medal & Prize for outstanding performance.

In 2001, Mr Preston was awarded the Japanese Foundation for the Promotion of Cancer Research / British Council Fellowship at the National Cancer Center Hospital, Tokyo. He also served as a Visiting Surgeon at the Division of Foregut Surgery, University of Pittsburgh Medical Center in 2006. He has an international reputation, lectures widely, and demonstrates surgical techniques globally. In 2015, he was the Distinguished Visiting Lecturer at the Royal College of Surgeons of Australia Annual Scientific Meeting.

He is a member of several professional bodies and has served as a Council Member of the Association of Upper Gastrointestinal Surgeons (AUGIS) and the Association of Laparoscopic Surgeons of Great Britain and Ireland (ALSGBI). He is also a Senior Visiting Fellow at the University of Surrey. His research interests focus on the evaluation and optimal management of patients with oesophageal and gastric cancer. He is the National Chief Investigator for the NCRI portfolio study (NeoAEGIS) and Principal Investigator for another (OCCAMS). His clinical interests include Enhanced Recovery (ERAS), Standardised Clinical Pathways, and Prehabilitation ahead of surgery (Prehab).