Law enforcement in the United Kingdom is organised separately in each of the legal systems of the United Kingdom: England and Wales, Scotland, and Northern Ireland. Most law enforcement duties are carried out by those who hold the office of police constable of a territorial police force.
The City of London Police is the territorial police force responsible for law enforcement within the City of London, England, including the Middle and Inner Temples. The force responsible for law enforcement within the remainder of the London region, outside the city, is the much larger Metropolitan Police, a separate organisation. The City of London, which is now primarily a financial business district with a small resident population but a large commuting workforce, is the historic core of London, and has an administrative history distinct from that of the rest of the metropolis, of which its separate police force is one manifestation.
Chief Constable is the rank used by the chief police officer of every territorial police force in the United Kingdom except for the City of London Police and the Metropolitan Police, as well as the chief officers of the three 'special' national police forces, the British Transport Police, Ministry of Defence Police, and Civil Nuclear Constabulary. The title is also held by the chief officers of the principal Crown Dependency police forces and the Sovereign Base Areas Police in Cyprus. The title was also held, ex officio, by the president of the Association of Chief Police Officers under the Police Reform Act 2002. It was also the title of the chief officer of the Royal Parks Constabulary until this agency was disbanded in 2004.
Police ranks are a system of hierarchical relationships in police organisations. The rank system defines authority and responsibility in a police organisation, and affects the culture within the police force. Usually, uniforms denote the bearer's rank by particular insignia affixed to the uniforms.
Cheshire Constabulary is the territorial police force responsible for policing the ceremonial county of Cheshire in North West England, comprising the unitary authorities of Cheshire East, Cheshire West and Chester, Borough of Halton and Borough of Warrington. The force is responsible for policing an area of 946 square miles (2,450 km2) with a population of approximately 1 million.
The Special Constabulary is the part-time volunteer section of statutory police forces in the United Kingdom and some Crown dependencies. Its officers are known as special constables.
Derbyshire Constabulary is the territorial police force responsible for policing the county of Derbyshire, England. The force covers an area of over 1,000 square miles (3,000 km2) with a population of just under one million.
Merseyside Police is the territorial police force responsible for policing Merseyside in North West England. The service area is 647 square kilometres with a population of around 1.5 million. As of September 2017 the service has 3,484 police officers, 1,619 police staff, 253 police community support officers, 155 designated officers and 208 special constables. The force is led by Chief Constable Serena Kennedy.
The Cambridge University Constabulary is a body of constables that patrol the precincts of the University of Cambridge. There are approximately 20 to 30 constables in the constabulary. The university constables are commonly known as 'bulldogs'. In reality, the constabulary acts as a security and stewarding service for the university with policing the responsibility of Cambridgeshire Constabulary; the university constabulary made no arrests between 2010–2015 and may not have made any in the previous 10 years either.
The Isle of Man Constabulary is the national police service of the Isle of Man, an island of 85,000 inhabitants, situated approximately equidistant from Northern Ireland, Wales, Scotland and England.
The Port of Liverpool Police is a non-Home Office ports police force with responsibility for Liverpool, Bootle, Birkenhead, Ellesmere Port and Eastham Dock Estates and Freeports, as well as the Manchester Ship Canal areas in the north-west of England.
York Minster Police is a small, specialised cathedral constabulary responsible for security in York Minster and its precincts in York, United Kingdom.
A cathedral constable is a constable employed by a cathedral of the Church of England. They have been appointed under common law and cathedral statutes for nearly 800 years.
Liverpool Cathedral Constables are a cathedral constabulary responsible for providing security for Liverpool Cathedral.
A special constable or special police constable can refer to an auxiliary or part-time law enforcement officer or a person who is granted certain (special) police powers.
Liverpool Parks Police was a police force maintained by the Corporation of Liverpool to police the parks and open spaces owned by the city. The first record of "park constables" in Liverpool is from 1832, although members of the force were not sworn in as constables in their own right until 1882. The force was disbanded in 1972.
The Canterbury Cathedral Close Constables are a cathedral constabulary employed by Canterbury Cathedral to maintain order and security in and around the cathedral. They have the same police powers as regular police in the United Kingdom, including the power of arrest, within the cathedral and its precincts.
