Arrests for Recorded Crime (Notifiable Offences) and the Operation of Certain Police Powers under the Police and Criminal Evidence Act 1984/ Ministry of Justice,30 July 2008
http://www.justice.gov.uk/publications/arrestsfornotibleoffences.htm

"This document presents the latest national statistics on persons arrested for recorded crime (notifiable offences) by type of offence, age, sex, and police force area in England and Wales. It also includes information on police stops and searches of persons and vehicles, including the reasons for the searches."