Imperial College London


Faculty of MedicineDepartment of Metabolism, Digestion and Reproduction

Honorary Senior Clinical Lecturer







Hammersmith HospitalHammersmith Campus





Current Posts

Dr Laksh Ayaru has been a Consultant Gastroenterologist and Honorary Clinical Senior Lecturer at Imperial College Healthcare NHS Trust (Charing Cross and Hammersmith Hospitals) and Imperial College London respectively since his appointment in 2010. He is an expert therapeutic endoscopist, a nationally accredited colonoscopist on the bowel cancer screening programme and deputy director of West London (Imperial) bowel cancer screening center. Dr Ayaru is also an expert clinical advisor to The National Institute for Health and Care Excellence (NICE).  


He qualified from Guys and St Thomas’s medical school with distinction in 1995 and trained in gastroenterology mainly at University College and the Royal Free Hospitals from 2000-2008. Dr Ayaru then went on to subspecialise in advanced therapeutic endoscopy at the world endoscopy organization centre of excellence at St Michaels Hospital, Toronto led by Professor N Marcon achieving his fellowship certification in 2009.


His research training was with the NIH funded hepatopancreaticobiliary dysplasia and malignancy group headed by Dr S Pereira at The Institute of Hepatology, UCL and the CRUK Chromosomal Replication Group based at The Wolfson Institute for Biomedical Research, UCL led by Professor G Williams. He was awarded a PhD in Medicine from UCL in 2007 which was rated as outstanding. 

Dr Ayaru's current research  programme aims to develop novel risk stratification models and scores for acute gastrointestinal bleeding. 



Boger P, Rahman I, Hu M, et al., 2021, Endoscopic full thickness resection in the colo-rectum: outcomes from the UK Registry, European Journal of Gastroenterology & Hepatology, Vol:33, ISSN:0954-691X, Pages:852-858

Harlow C, Sivananthan A, Ayaru L, et al., 2020, Endoscopic submucosal dissection: an update on tools and accessories, Therapeutic Advances in Gastrointestinal Endoscopy, Vol:13, ISSN:2631-7745, Pages:1-13

Banister T, Spiking J, Ayaru L, 2018, Discharge of patients with an acute upper gastrointestinal bleed from the emergency department using an extended Glasgow Blatchford Score, Bmj Open Gastroenterology, Vol:5, ISSN:2054-4774

Oakland K, Jairath V, Uberoi R, et al., 2017, Derivation and validation of a novel risk score for safe discharge after acute lower gastrointestinal bleeding: a modelling study, Lancet Gastroenterology & Hepatology, Vol:2, ISSN:2468-1253, Pages:635-643

Ayaru L, Ypsilantis P-P, Nanapragasam A, et al., 2015, Prediction of Outcome in Acute Lower Gastrointestinal Bleeding Using Gradient Boosting, Plos One, Vol:10, ISSN:1932-6203

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