Paul Davis is a Consultant Clinical Psychologist in Addiction, and Teaching Fellow in Clinical Psychology at the University of Surrey, UK. He has contributed at a national level on substance misuse treatment guidelines, policies and service developments and has published widely in the field of psychosocial interventions for substance misuse. Bob Patton is a lecturer in Psychology at the University of Surrey, UK, Director of Short Term Solutions Ltd and Director of AdApped Ltd. He has previously worked as a consultant for the Home Office Drugs Prevention Initiative and as a Research Fellow in Addiction at Imperial College, King's College London and the Maudsley Hospital Hospital. Sue Jackson is a chartered psychologist specialising in the psychosocial impact and treatment of chronic health conditions. In addition to managing an extensive research portfolio, she is a teaching fellow on the Clinical Psychology Doctorate Programme at the University of Surrey and is the first psychologist to serve on the Medical Advisory Committee for the Pituitary Foundation.