Editorial Board Lasers in Medical Science.
Associate Editor Photodiagnosis and Photodynamic therapy.
Editorial Board Technology in Cancer Research and Treatment (TCRT)
Medical Research Council. Upper Gastrointestinal Cancer Group.
British Medical Laser Association (Executive Council member & Secretary1998-2004)
Medical Research Council Steering Group for Clinical Trials (Barrett’s oesophagus)
British Society of Gastroenterology (Endoscopy Section & Endoscopy Research Section 1997-2000).
NHS Research and Education Committee (South & West 1994-2000).
Gloucestershire Research and Development Consortium. Three Counties Cancer Network Research Committee.
World Congress of Gastroenterology (organiser of the Barrett’s symposium 1998).
United European Digestive Week (organiser and state of the art speaker).
Undergraduate Examiner in Surgery BM, University of London.
Undergraduate Examiner BM, University of Oxford 6 Years.
Reappointed Examiner and Deputy Principle External Examiner in Surgery 2009.
External Higher Degree Examiner (PhD, MD), Cambridge University, University of London (x4), University of Liverpool, University of Edinburgh, Erasmus University, Rotterdam, Dundee University (x2).
International Advisory Group of the International Working Group for the Classification of Oesophagitis (IWGCO)
Development and validation of a training module on the use of acetic acid for the detection of Barrett's neoplasia