Geoff Tansey is a Trustee of the Food Ethics Council and Joseph Rowntree Visionary for a Just and Peaceful World. He is a freelance writer and consultant on food, agriculture and related intellectual property issues. Tony Worsley is Professor of Behavioural Nutrition in the School of Exercise and Nutrition Sciences and a member of the Centre for Physical Activity and Nutrition Research (C-PAN). He has wide experience in the evaluation of public health nutrition programs, and in the promotion and maintenance of food behaviour change and has published widely in scientific and professional journals.