Dr Mike Nash is the Head of the Institute of Criminal Justice Studies at the University of Portsmouth and has worked as a Senior Probation Officer at Hampshire Probation Service. His main research interests are concerned with the response of the criminal justice system to the concept of 'dangerousness' in relation to the police and probation services. He is the author of the 2006 OUP title 'Public Protection and the Criminal Justice Process'. Dr Andrew Williams is Course Leader in Criminology and Criminal Justice at the University of Portsmouth.