Dr John Paul Martin is a highly-experienced gastroenterologist based in London. He practises at Imperial College (ICL) and other reputable London clinics specialising in colorectal cancer, inflammatory bowel disease and diseases of the small intestine. He performs advanced polypectomy as well as teaching colonoscopy both within the NHS Trust and also at national screening centres. He is a bowel cancer screening accredited colonoscopist and an examiner for BCSP colonoscopy accreditation. He forms an integral part of numerous other professional bodies and has been widely published in peer-reviewed journals.