The focus of Melvyn’s research is physical activity epidemiology and public health. He has published a number of articles and systematic reviews on exercise promotion in primary care and has been involved in the evaluation of a number of large community exercise interventions. He has also published a number of articles examining the prospective association between physical activity and various health outcomes using data from established cohort studies. He was a co-author of the primary care physical activity care pathway Let’s Get Moving and also produced the General Practice Physical Activity (GPPAQ) for the Department of Health. His current research is directed towards developing methods for translating raw acceleration data from objective measures of physical activity into clinically meaningful metrics. He has been a member of various National Institute of Health and Care Excellence (NICE) public health committees and is currently a member of the Chief Medical Officer’s (England) Physical Activity Expert Group.