John L Taylor is Professor of Clinical Psychology, Northumbria University and Consultant Clinical Psychologist and Psychological Services Professional Lead with Northumberland, Tyne & Wear NHS Foundation Trust. He is a Past President of the British Association for Behavioural & Cognitive Psychotherapies (BABCP).

Bill Lindsay is Consultant Psychologist and Lead Clinician in Scotland for Castlebeck Care. He was previously Head of Psychology (LD) in NHS Tayside and a Consultant Clinical Psychologist with the State Hospital, Carstairs. He is Professor of Learning Disabilities and Forensic Psychology at the University of Abertay, Dundee, and Honorary Professor with the School of Psychology, Bangor University.

Richard Hastings is Professor of Psychology at Bangor University and Research Director for the North Wales Clinical Psychology Programme. He has published widely in the field of intellectual disability, and is currently an associate editor for five international journals and on the editorial board member for a further nine.

Chris Hatton is Professor of Psychology, Health and Social Care at Lancaster University. His research interests centre on policy-relevant research concerning people with intellectual disabilities, particularly around evaluating innovations in health and social care and understanding inequalities in the physical and mental health of people with intellectual disabilities.