David John Nutt (born 16 April 1951) is an English neuropsychopharmacologist specialising in the research of drugs that affect the brain and conditions such as addiction, anxiety, and sleep. He is the chairman of Drug Science, a non-profit which he founded in 2010 to provide independent, evidence-based information on drugs. Until 2009, he was a professor at the University of Bristol heading their Psychopharmacology Unit. Since then he has been the Edmond J Safra chair in Neuropsychopharmacology at Imperial College London and director of the Neuropsychopharmacology Unit in the Division of Brain Sciences there. Nutt was a member of the Committee on Safety of Medicines, and was President of the European College of Neuropsychopharmacology. Source: Wikipedia (en)