Spira was educated at Stowe School, Buckingham. After training at St Bartholomew's Hospital, London, he entered general practice and became a senior partner in a large NHS general practice. He was also a visiting physician at Bupa Wellness, London. He was a member of the Counterweight Project, the government-funded multi-centre obesity programme to evaluate the management of obesity in primary care, and of the Scottish Intercollegiate Guidelines Network Working Party on Obesity. He is a member of the National Obesity Forum. He has been adviser to several leading slimming organisations and publications and has appeared on many national radio and TV programmes, such Kilroy and ITV's Good Morning. He has had various white papers published on a variety of topics, including weight management.[1] He has a particular interest in the role of HIIT (high intensity interval training) in weight control. Currently he is medical director of the Smart Clinics which provide integrated healthcare in South Kensington, Notting Hill and Wandsworth [2]