David A. Crighton is Hon. Professor of Forensic Psychology at Durham University. He was formally Deputy Chief Psychologist in the UK Ministry of Justice. He is a past Chair of the BPS Expert Witness Advisory Group and a past Secretary and Treasurer of the British Psychological Society, Division of Forensic Psychology.

Graham J. Towl is Professor of Forensic Psychology, Durham University and visiting Clinical Professor, University of Newcastle. He was formally the Chief Psychologist at the Ministry of Justice, UK, and uniquely is the recipient of BPS awards for Distinguished Contributions to Professional practice and forensic academic knowledge. His research interests are wide currently including suicide in prisons and sexual violence at universities.