Simon Heller is Professor of Clinical Diabetes at the University of Sheffield. Director of Research and Development and Honorary Consultant Physician at Sheffield Teaching Hospitals Foundation Trust. UK. He received his clinical diabetes training at Queen’s Medical Centre. Nottingham and his research training at the University of Nottingham and Washington University. St Louis. USA. From 2000-2005 he was Editor of Diabetic Medicine. He is currently a member of Diabetes UK Science and Research Advisory Group. a member of the UK NIHR Programme Grants for Applied Research Panel and the UK Juvenile Diabetes Research Foundation. UK Scientific Advisory Committee. Between 2005 - 2014 he chaired the Clinical Studies Advisory Group of the UK Diabetes Research Network and is currently the National Speciality Lead in Diabetes to the NIHR Clinical Research Network. He is an NIHR Senior Investigator. He currently chairs the International Hypoglycaemia Study group. an independently funded group of international experts with a research and clinical expertise in hypoglycaemia. The group has a remit to reduce the burden of hypoglycaemia though educational activities. His current research interests include the pathophysiological responses to hypoglycaemia and hypoglycaemia unawareness. the potential contribution and mechanisms of hypoglycaemia to cardiovascular mortality. the use of insulin analogues and other technologies to reduce hypoglycaemia. He chaired the glucose control group of the ADVANCE trial is a steering committee member of the EXAMINE trial and was the PI on the REPOSE trial measuring the effectiveness of insulin pumps. He also conducts research programmes concerned with developing interventions (including the DAFNE intervention) to encourage more effective diabetes self-management. He has authored over 200 original research articles and reviews.