Professor of Philosophy, The Centre for Philosophy, Justice and Health, University College London
His work has largely concentrated on issues of distributive justice, with a particular interest in the relation between theory and policy.
Recently he has worked on topics such as disadvantage, disability, risk and the measurement of health, and is principal applicant on the AHRC funded project The Ethics of Risk.
He is a member of the Nuffield Council on Bioethics, and of the Nuffield Council Working Party on Personalised Healthcare. Formerly he was a member of the Gambling Review Body, the Nuffield Council Working Party on the Ethics of Research Involving Animals, and the Academy of Medical Sciences Working Party on Brain Science and Addiction.
He is currently advising an inter-departmental government committee on the valuation of life and health.