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General Surgery
20 years of experience
Laparoscopic (Key-Hole) Surgery, Upper GI (Gastrointestinal) Surgery

Mr Stephen Brennan is a consultant general surgeon practising at HCA at the Shard and The London Bridge Hospital. He has a specialist interest in Upper GI, Keyhole and Hernia surgery. His areas of particular expertise include gallbladder surgery and laparoscopic (keyhole) repair of hernia. He performs upper GI gastroscopy, colonoscopy and sigmoidoscopy. He has personally performed more than 2,000 laparoscopic procedures including cholecystectomy, fundoplication, and repair of hernia.

Mr Brennan is originally from Dublin, and underwent specialist training in Scotland where he was lucky enough to be taught by some of the top experts in the field. He went on to train at the MATTU centre in Guildford, an internationally recognised centre for upper GI and keyhole surgery. He also undertook fellowships in Australia and South Africa. He has also been on hernia surgery missions to under-resourced parts of Africa.

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General Surgery
Offers video consultation
32 years of experience
Laparoscopic (Key-Hole) Surgery, Upper GI (Gastrointestinal) Surgery

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

Prize for the best results across the UK and outstanding performance in the viva voce examinations.

Mr Preston was also awarded the prestigious Japanese Foundation for the Promotion of Cancer Research / British Council Fellowship at the National Cancer Center Hospital, Tokyo (2001) where he worked in the Gastric, Oesophageal &

Endoscopic Divisions. He also was a Visiting Surgeon at the Division of Foregut Surgery, University of Pittsburgh Medical Center (2006). He has an international reputation, lectures widely and demonstrates surgical technique around the world. In 2015 he was the Distinguished Visiting Lecturer at the Royal College of Surgeons of Australia Annual Scientific Meeting.

He is a member of many professional bodies and has also been a Council Member of the Association of Upper Gastrointestinal Surgeons (AUGIS) and the Association of Laparoscopic Surgeons of Great Britain, International

Hepato-Pancreato-Biliary Association and Ireland (ALSGBI).

His is Senior Visiting Fellow at the University of Surrey. His research interests are in the evaluation and optimal management of patients with oesophageal and gastric cancer. His is National Chief Investigator for one

NCRI portfolio study (NeoAEGIS) and Principal Investigator on another (OCCAMS). He has clinical interests in Enhanced Recovery (ERAS), Standardised Clinical Pathways and Prehabilitation ahead of surgery (Prehab).

Diseases, Medical Tests and Treatments

  • Upper GI Surgery
  • Fundoplication / Anti-reflux Surgery
  • Giant (Paraoesophageal) Hiatus Hernia Repair
  • GastroIntestinal Stromal Tumour (GIST) Surgery
  • Laparoscopic Transgastric Surgery
  • Diaphragmatic Hernia Repair
  • Upper GI Endoscopy (OGD)
  • Barrett's Oesophagus Surveillance
  • Laparoscopic Common Bile Duct Exploration
  • Incisional Hernia Repair
  • Umbilical Hernia Repair
  • Ventral Hernia Repair
  • Component Separation Repair for Large Incisional Hernia

Anti-reflux surgery


Swallowing problems (Dysphagia)

Giant paraoesophageal hernia repair

GastroIntestinal Stromal Tumour (GIST) surgery

Endoscopic Ultrasound

Enhanced Recovery

Open Hernia Repair

Laparoscopic Hernia Repair

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General Surgery
39 years of experience
Upper GI (Gastrointestinal) Surgery