My research interests are primarily in the cost-effectiveness of interventions to improve health across a range of disease areas and population groups, and the determinants of health service use. I have written several papers on the economics of obesity, and have interests and expertise in undertaking econometric analyses of large datasets including Hospital Episode Statistics and the Health Survey for England. With David Parkin, Nancy Devlin and Anne Spencer I wrote Economic Analysis in Health Care, currently published in its second edition. I am the joint national organiser of the Health Economists’ Study Group (HESG) and run the HESG email distribution list. I sit on a Public Health Advisory Committee at NICE, the NIHR Public Health Research Programme Research Funding Board, the NIHR Health Services and Delivery Research Funding Board, and the NIHR Programme Grants for Applied Research expert panel.