Weight Loss Surgeons
Our surgeons are the UK’s leading consultants specialising in weight loss surgery, so as well as specialising in general and upper gastrointestinal surgical work they all have one thing in common – they are committed to providing clinical excellence and the best possible care to their patients.
They are UK based and they are all NHS consultants too. Our team has the experience and expertise in this specialist area of treatment. Our specialist nurses work closely with the surgeons to deliver our unique weight management programme, making sure you have the care and treatment you deserve to achieve your health goals.
With the Gateway team you can relax, knowing that you are in the best hands for your treatment and aftercare.
MR ROGER ACKROYD

Roger Ackroyd qualified in medicine from Sheffield University in 1989. He trained in general and upper GI surgery in Sheffield and in Adelaide, South Australia. He took up a consultant appointment in Sheffield in 2001 and specialises in upper GI surgery.
His main clinical interests include oesophago-gastric cancer surgery, laparoscopic surgery and bariatric surgery. He also runs an active research programme. His main research interests include ablation therapy for Barrett’s oesophagus and oesophageal cancer, clinical trials comparing different types of anti-reflux surgery and evaluating the metabolic effects of obesity surgery.
He has an extremely busy bariatric surgery practice, operating on around 400 patients per year. He has performed in excess of 1400 obesity operations. He offers all types of obesity surgery, both open and laparoscopic, including revisional surgery. The most common operations offered by him include laparoscopic gastric band, laparoscopic roux-en-Y gastric bypass and laparoscopic sleeve gastrectomy.
Prof. Nadey Hakim
KCJSJ , MD , PhD, FRCS, FRCSI, FACS, FICS
Nadey S Hakim is a General, Bariatric and Transplant Surgeon. He is the Surgical Director of the West London Transplant Unit based at the Hammersmith Hospital . He has a particular interest and expertise in kidney and pancreas transplantation. He is a Fellow of the American Society of Bariatric Surgeon. He obtained his MD from Paris Rene Descartes University ; he received his surgical training at Guy’s Hospital in London , PhD in small bowel transplantation from University College London. He completed a Gastrointestinal Fellowship at the Mayo Clinic and a Multiorgan Transplant Fellowship at the University of Minnesota .
Professor Hakim successfully started the first Pancreas Transplant Program in the SE of England. From the administrative point of view he is the Editor in Chief of International Surgery, a prestigious peer reviewed journal and on the Editorial board of Transplant Proceedings, Graft, Experimental and Clinical Transplantation and of several other journals.
Professor Hakim is a Member of the Kidney-Pancreas Committee of the American Society of Transplant Surgeons (ASTP), Past President of Transplantation Section of the Royal Society of Medicine. He was part of the Working Party to Review Organ Transplantation in the UK . He has represented Britain in the International team which has performed the world’s first arm Transplant and the world’s first double arm Transplant. He has given numerous presentations in the UK and throughout the world.
Professor Nadey S Hakim has been awarded an Honorary Professorship of Sao Paolo, University of Lyon , University of Lima Peru and University of Beshkent Ankara and has been a visiting Professor at several prestigious centres including Harvard University .
He has recently been awarded the 2007 J. Wesley Alexander Prize for outstanding Research in the field of Transplantation.