History of the Metropolitan Police Service been headed by a Commissioner, rather than a Chief Constable which is the highest rank in police forces outside London. The first Commissioners to hold the post were Lieutenant-Colonel Sir Charles Rowan and Sir Richard Mayne. When Sir Charles Rowan died, leaving Sir Richard Mayne as the surviving Commissioner, Captain William Hay was drafted in to jointly run the force with Mayne. However, because the two Commissioners did not agree on methods of running the force, since 1855 it was decided that only one Commissioner would run the force. Metropolitan Police patrols took to the streets on 29 September 1829,
Law enforcement in the United Kingdom are unarmed. "Sworn persons" "Non-sworn persons" From 22 November 2012, police authorities outside London were replaced by directly-elected Police and Crime Commissioners. In London the City of London Police continued to be overseen by City of London Corporation, whilst the Mayor of London has responsibility for the governance of the Metropolitan Police. In Northern Ireland, the Police Service of Northern Ireland is supervised by the Northern Ireland Policing Board. In Scotland, Police Scotland is overseen by the Scottish Police Services Authority. The British Transport Police and the Civil Nuclear Constabulary had their own police authority established in 2004. These forces