While at NICE he appeared regularly on the Today Programme and BBC, ITV and Sky Television. He has advised the House of Commons Health Select Committee and been a witness before parliamentary committees on a number of occasions. He has chaired committees for MRC/ESRC, the Foods Standards Agency. From 2005 to 2007 he directed the methodology work stream for the World Health Organisation’s (WHO) Commission on the Social Determinants of Health. This body of work was the first time that a properly evidence based approach to dealing with health inequalities had been attempted by WHO. He has a continuing interest in health inequalities and is pursuing a programme of research in Cambridge on this topic. Research interests: prevention of non-communicable disease, living with chronic illness, health inequalities, health related behaviour change, end of life care, dental public health, improving rates of physical activity, the relationship between evidence and policy and the methods and philosophy of evidence based medicine.