●  Police officers detect and prevent crime, bring offenders to justice, keep the peace, and protect people and their property from injury and damage.

●  The Police and Criminal Evidence Act 1984, as amended, and its Codes of Practice, contain rules concerning police powers of stop, search, entry, seizure of property, arrest, detention, and treatment of suspects.

●  The Public Order Act 1986 concerns the control of protests and assemblies.

●  Police powers contained in the 1986 Act were extended by the Criminal Justice and Public Order Act 1994 and the Anti-social Behaviour Act 2003.

●  The Serious Organised Crime and Police Act 2005 made important changes to the rules governing powers of arrest and introduced further restrictions to the right to protest in parts of Central London.

●  The Terrorism Act 2000 introduced comprehensive counter-terrorist measures throughout the UK.

●  The Anti-terrorism Crime and Security Act 2001 focuses on terrorist funding, intelligence gathering, immigration, and the elimination of organized crime.

●  The Terrorism Act 2006 extends the law further.