||David is a Consultant Radiologist working at St. Mark's Hospital in London, a specialist hospital for gastrointestinal disorders. He is an expert in bowel cancer and inflammatory bowel disease imaging and Program Director for the St. Mark's Virtual Colonoscopy (VC, CT colonography) program, which is internationally renowned for excellence in clinical practice and research. David has authored over forty publications and has a distinction MD thesis in VC. He is also one of the Europe’s leading trainers in bowel imaging techniques. Specialist expertise in bowel cancer screening, virtual colonoscopy, abdominal imaging, pelvic floor imaging and complex inflammatory bowel disease imaging.