He was co-Director of the Quality and Outcomes (QOF) Review Panel from 2005-09. He sits on many national and international scientific and research funding boards, including the Council of the British Heart Foundation (until 2012), the Board of the British Primary Care Cardiovascular Society, and am President of the European Primary Care Cardiovascular Society (EPCCS).
His research interests focus on cardiovascular epidemiology and clinical trials, especially relating to vascular and stroke risk, and heart failure. Overall his publications include 28 book chapters, 13 edited books and over 350 original papers in peer reviewed journals such as the Lancet, Annals of Internal Medicine, BMJ, Atherosclerosis, EHJ and Stroke. His research has impacted on international health policies and clinical guidelines. Within the NHS, he has consulted on National Service Frameworks for CHD, atrial fibrillation, and heart failure and several National Institute of Clinical Excellence (NICE) reviews. He has also provided clinical care in inner-city general practice for over 30 years.