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,
Metropolitan Police Authority the Greater London Authority, by the Greater London Authority Act 1999. Previously control of the Metropolitan Police had vested entirely in the Home Secretary. The MPAs ceased to exist on 16 January 2012, when its functions were transferred to the Mayor's Office for Policing and Crime (MOPAC). Metropolitan Police Authority The Metropolitan Police Authority (MPA) was the local police authority responsible for scrutinising and supporting the work of the Metropolitan Police Service, the police force for Greater London (excluding the City of London Police area). The establishment of the MPA in 2000 marked a fundamental change in the policing of