Sanjay Purkayastha is a Consultant General Surgeon with a specialist interest in Bariatric & Upper GI Surgery. He is also a Clinical Senior Lecturer (associate professor) at Imperial College, London. His research interests are varied and include surgical education especially digital mobile technologies, clinical research in bariatric and metabolic surgery, assessing the health of healthcare organizations, single port laparoscopic surgery and surgical evidence synthesis. He has a busy general surgery practice both for elective (planned) surgery and emergencies which include working as a trauma surgeon in one on London's busiest Major Trauma Centres at St. Mary's Hospital, Paddington, London. He was also one of the first surgeons in the UK to carry out robotic Bariatric surgery. He has been the consistently highest volume surgeon at the Imperial Weight Centre which is a Tier 3 and Tier 4 service for weight loss management and surgery for obesity. He routinely carries out gastric bands, sleeve gastrectomies and gastric bypasses all laparoscopically (key hole surgery); as well as carrying out revisional bariatric surgery and providing second opinions for complex cases from other centres. Mr. Purkayastha provides all his Bariatric data to the NBSR (National Bariatric Surgery Registry) as he is a believer of transparency of results and outcome/volume based surgery ensuring the safest and best results for patients. Mr. Purkayastha is also collaborating with teams to introduce artificial intelligence and machine learning systems into the operating room environment to improve outcomes and was the first surgeon to do this live in the operating room in 2018. His general surgery practice includes laparoscopic surgery for hernias of all kinds, gall bladder surgery and anti-reflux surgery (surgery for treatment of severe heartburn) as well as emergency surgery work outside trauma that includes management of conditions such as appendicitis, gallstones, pancreatitis, bowel obstruction, hernia emergencies and the management of many other conditions that present with abdominal pain. His NHS practice is at St. Mary's Hospital, Praed Street, London and he also sees patients there privately on request in the Lindo Wing where Prince George was born in 2013 and Princess Charlotte born in 2015.