M. Ryan & S. Savage 
Policy Networks in Criminal Justice [PDF ebook] 

Policy Networks in Criminal Justice is a comprehensive and challenging collection of studies on the workings of pressure groups in criminal justice and the articulation of pressure group politics and criminal justice policymaking. Against a back cloth of policy networks theory, the authors examine the role and activities of professional associations in the areas of policing, probation, law and the courts, together with campaigning groups, such as those in the areas of penal reform, civil liberties and victims. In addition, the book includes a study of the growing role of local authorities in the world of criminal justice.