Dr Ahmir Ahmad

Dr Ahmir Ahmad is a Consultant Gastrointestinal Endoscopist and Luminal Gastroenterologist. He specialises in endoscopic procedures including colonoscopy, flexible sigmoidoscopy, gastroscopy, and polypectomy, as well as the diagnosis and management of a broad range of gastrointestinal conditions such as abdominal pain, dyspepsia, gastro-oesophageal reflux, irritable bowel syndrome (IBS), diarrhoea, constipation, gastrointestinal bleeding, inflammatory bowel disease (IBD), and coeliac disease. In 2023, Dr Ahmad was appointed as a Consultant at the internationally renowned St Mark’s National Bowel Hospital, where he performs procedures at the Wolfson Unit for Endoscopy—a world centre of excellence. Accredited in both upper and lower gastrointestinal endoscopy, he has performed over 4,000 procedures. His clinical interests include complex polypectomy, optical and AI-assisted diagnosis, and advancing techniques in colonoscopy. Dr Ahmad graduated with distinction from University College London in 2010. He completed a four-year specialist clinical and research endoscopy fellowship at St Mark’s National Bowel Hospital from 2018 to 2022, during which he also undertook a PhD at Imperial College London. His doctoral research, under the supervision of Professor Brian Saunders, focused on optimising efficiency across the colonoscopy care pathway. Dr Ahmad led the landmark DISCARD3 study, which investigated the use of optical diagnosis with a “resect and discard” strategy—the findings from this research are now being adopted nationally. As Clinical Lead for Optical Diagnosis, he plays a key role in supporting adoption of this innovative change in practice within the NHS England Bowel Cancer Screening Programme. He is also an Honorary Senior Clinical Lecturer at Imperial College London and a member of the British Society of Gastroenterology’s Clinical Research Group. Dr Ahmad has published extensively in the field and is passionate about education. Most recently, he co-authored the 8th edition of the renowned textbook Cotton & Williams’ Practical Gastrointestinal Endoscopy.

Diagnostic and therapeutic colonoscopy including polypectomy Bowel cancer prevention Gastroscopy Gastrointestinal medicine Digestive health