Glenn Hutton BA, MPhil, FCIPD is a Director of Psychometric Technology Limited which designs and publishes psychological tests and provides selection and assessment services. Formerly a Superintendent in North Yorkshire Police, he also worked as Head of NPT Examinations and Assessment, Head of Training in North Yorkshire and as both Course Director and Director of Studies at the Police Staff College, Bramshill. Gavin McKinnon LLB, LLM, MSc is a Chief Superintendent and Head of Secretariat at the National Policing Improvement Agency with responsibility for legal services, corporate governance, and equality and diversity. Formerly an officer in the RUC/PSNI and a Senior Civil Servant in the Home Office Police Reform Unit, he is an adjunct Professor of Law at the City University of New York. He has been published in legal and terrorism journals. In 2006 he was appointed to the Independent Monitoring Board for Brixton Prison by the Home Secretary.