This book provides practical guidance on what remains the single most important statutory basis for police duties and powers in England and Wales, the Police and Criminal Evidence Act 1984 and its Codes of Practice. The third edition includes all recent amendments to the Codes of Practice, including Codes A, B and D (March 2011), Codes C and H (July 2012) and Code G (November 2012), as well as the full text of the Act and Codes of Practice. Explanatory chapters, covering key areas such as powers for stop and search, as well as commentary on detention and interviews, have been updated in line with legislative changes stemming from the Prevention and Investigation Measures Act 2011, the Protection of Freedoms Act 2012, and the Legal Aid Sentencing and Punishment of Offenders Act 2012. With the aid of check-lists, flow-charts and illustrative examples, this book gives excellent guidance on how the procedures and requirements of the Act apply to common, everyday scenarios facing police officers, as well as other persons charged with the investigation of offences. This is an essential reference source which the busy police officer or legal practitioner cannot afford to be without.