Professor Jason Halford is Head of the Department of Psychological Sciences at the University of Liverpool, former Chair of the UK Association for the Study of Obesity – ASO (www.aso.org.uk), and Treasurer of the European Association of Obesity (EASO). He is a Chartered Health Psychologist. His early research focused on anti-obesity drugs and appetite and this has progressed to the behavioural assessment of potential anti-obesity drugs in early clinical development. Over the past 10 years his research has focused on drug-induced weight gain, the effects of nutrients and fibre on appetite and hormone release, the effects of stress on eating behaviour, the effect of marketing of children, and on lean-obese differences in the expression of appetite. In 1999 he co-founded the Human Ingestive Behaviour Laboratory at Liverpool and in 2004 he also cofounded the Liverpool Obesity Research Network (LORN). Professor Halford is the co-ordinator of the 8 million Euro EU Framework Seven Satiety Innovation SATIN project (www.satin-satiety.eu) to develop novel foods for appetite control using novel processing technologies to alter food structure. He is also a leading scientist on the WRAP trial investigating the role of commercial weight management providers in primary care and the lead investigator on a new trial to examine the impact of artificial sweeteners on appetite in the context of active weight management.