Phil Willmot, PhD, is a consultant forensic and clinical psychologist with over 30 years' experience of working with men with a diagnosis of personality disorder in prison and forensic mental health services. He is also a senior lecturer in forensic psychology at the University of Lincoln.

Lawrence Jones is Head of Clinical and Forensic Psychology at Rampton Hospital and a former chair of the Division of Forensic Psychology in the British Psychological Society. He also teaches on the Leicester and Sheffield clinical doctorates and the Nottingham forensic doctorate.

Geraldine Akerman, PhD, is a consultant forensic psychologist who has worked in prisons for many years both for His Majesty's Prison and Probation Service and the NHS. Geraldine is a visiting lecturer at the universities of Birmingham and Buckingham, and Cardiff Metropolitan University and Director of Forensic Psychology Network.

Adam Mahoney, PhD, is an associate professor in forensic and applied psychology at Edinburgh Napier University, as well as a consultant chartered forensic psychologist. Dr Mahoney has approximately 24 years' experience working in various forensic settings including in the Scottish Prison Service's women's estate.