Paul Connor, Glenn Hutton, David Johnston Paul Connor Cert Ed (FE), PG Cert (ODE), LLB is a Police Training Consultant, teaching law to over 3,000 candidates since 2002. He is the author of the Blackstone's Crime Manual and the Consultant Editor for the Blackstone's Police Manuals. He is the author of Blackstone's Police Investigators' Manual, Blackstone's Police Investigators' Workbook and Blackstone's Sergeants' and Inspectors' Mock Examination Paper. 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. David Johnston LLB, LLM is a barrister and Chief Superintendent in the Metropolitan Police Service. Formerly a member of the NPT Examinations and Assessment team, he is a former OSPRE Assessor and previously worked as a legal researcher for the Home Office in Harrogate.