Oxford Handbook of Police and Policing by 
Policing and Contemporary Governance : the anthropology of police in practice by 
Policing Citizens : authority and rights by The Law Bod has a Criminology collection on the 3rd Floor.
The shelf marks for this collection start Crim.
Crim 575 - History & role of police, issues relating to policing etc
Crim 580 - Secret police and political repression
SOLO searches may well show that our neighbour, the Bodleian Social Science Library (HV section), also has useful material on its shelves.
Police
Police-community relations
Community policing
Police administration Citizen participation
Civilian review boards (Police administration)
Police -- Complaints against
Police misconduct
Discrimination in law enforcement
Discrimination in criminal justice
POLITICAL SCIENCE Political Freedom & Security Law Enforcement
Police, Private
Private security services
Police murders
Police - violence against
Researching the Police in the 21st Century by 
Police Street Powers and Criminal Justice by 
Police Misconduct, Complaints, and Public Regulation by Police
Law enforcement
Criminal procedure
Criminal justice, Administration of
Discrimination in criminal justice administration
Police misconduct -- Law and legislation -- Great Britain
Police -- Complaints against -- Great Britain
Tort liability of police -- Great Britain
Police regulations -- Great Britain
