Mr Ali Alhamdani is one of London’s foremost bariatric and upper-gastrointestinal surgeons, with more than 4 500 weight-loss and revisional procedures performed since 2010 and a zero mortality record. A visiting international expert, he heads a global bariatric multidisciplinary team and is one of only nine surgeons worldwide approved to deliver an Oxford-affiliated international fellowship in obesity surgery. He practises at BUPA Cromwell, Spire Bushey, Weymouth Street and Whittington / UCLH hospitals and is sought after for complex re-do surgery, mini-gastric bypass and keyhole gall-bladder work. Author of the UK’s reference text “Weight Loss Surgery” (now in its third edition), he has produced over 300 peer-reviewed papers and conference presentations.