Dr de Silva has been a Consultant Gastroenterologist for over 18 years and is the Clinical Lead for Inflammatory Bowel Diseases at NNUH. He is Honorary Senior Lecturer at the University of East Anglia, Norwich Medical School. He carried out his speciality training in London before taking up Consultant posts in the East of England. He is responsible for formulating regional high-cost drugs pathways in conjunction with his local Clinical Commissioning Group. He is an accredited bowel cancer screening colonoscopist and therapeutic endoscopist.