Centre of Forensic Interviewing


Photo of Dr Brendan O'Mahony

Dr Brendan O'Mahony

  • Role Title: Visiting Fellow
  • Address: c/o St George's Building, 141 High Street, Portsmouth PO1 2HY
  • Telephone: 07711 959530
  • Email: brendan.o'mahony@port.ac.uk
  • Department: Institute of Criminal Justice Studies
  • Faculty: Faculty of Humanities and Social Sciences


  • Chartered Psychologist
  • Associate Fellow of the British Psychological Society
  • HCPC Registered Forensic Psychologist

Brendan is a Specialist (psychologist) Member of The Parole Board for England and Wales. He also works in private practice completing expert witness reports for the criminal courts. He holds the Cardiff University Bond Solon Expert Witness Certificate. Brendan is a committee member of the Expert Witness Advisory Group at the British Psychological Society.

Brendan is a Registered Intermediary with the Ministry of Justice in London and he also accepts instructions to work as an intermediary with vulnerable defendants. He completed his Professional Doctorate in Criminal Justice at the University of Portsmouth. His research focused on the role of intermediaries with vulnerable defendants. Brendan has co-authored a number of published peer reviewed journal papers and book chapters about the intermediary role and vulnerable witnesses. In 2011 Brendan was invited to Montreal by Professor Anne Crocker to address a conference being held at the Douglas Institute / McGill University. He was an advisory group member to The Mental Health and Justice Research Project (2013) which was a partnership research project between Victim Support, the Institute of Psychiatry at Kings College, London (IOP), Mind, Kingston University and St Georges, in collaboration with UCL.

Teaching Responsibilities

During the last few years Brendan has been invited on a regular basis by two UK police forces to deliver a training workshop as part of ABE interviewing courses, focusing on the needs of vulnerable witnesses and the use of Registered Intermediaries. He has also frequently delivered a workshop with similar content to student police officers.

He delivers lectures on an occasional basis to undergraduate and postgraduate students at London South Bank University, Lincoln University and Sheffield Hallam University. He has recently been invited to deliver occasional lectures to postgraduate students at the University of Liverpool.

In 2011 Brendan was invited to Montreal by Professor Anne Crocker to address a conference being held at the Douglas Institute / McGill University.