David leads The King’s Funds’ work on public health and health inequalities and has produced a wide range of work including recent reports on a vision for population health, the role of cities in health and communities and health. He advises many bodies including Public Health England on health inequalities and form 2019 is on the Editorial Board of Perspectives in Public Health.
Before joining the Fund, David worked at the Department of Health as deputy director for health inequalities. He managed the Labour government's PSA target on health inequalities and the independent Marmot Review of inequalities in health. While in the Department he worked on many policy areas – including on diabetes, long-term conditions, dental health, waiting times, the pharmaceutical industry, childhood obesity and choice and competition – as an economic and strategy adviser. He has also worked at Guy's Hospital, King’s College London and the Centre for Health Economics in York where his focus was on the economics of public health and behaviours and incentives.