Professor Michael Farrell FRCP FRCPsych is the Director of NDARC since 2011. Before that he was Professor of Addiction Psychiatry at the Institute of Psychiatry at Kings College London. His extensive research interests include treatment evaluation, national and international drug policy. He is the Chair of the International Consortium on Health Outcome Monitoring Substance Use working Group and Editor of the Cochrane Drug and Alcohol Group. He has a long-standing interest in drug dependence, comorbidity and drugs in the wider criminal justice system. He has been a member of the WHO Expert Committee on Drug and Alcohol Dependence since 1995.