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 District abolished the RPC in England and Wales and provided for the transfer of personnel within Greater London into the Metropolitan Police, leaving the Royal Parks within the general jurisdiction of the Metropolitan Police. The Ministry of Defence Police is responsible for policing a few Ministry of Defence buildings and property within the MPD. As with the BTP, their jurisdiction is not to the exclusion of the Metropolitan Police who have statutory responsibility for providing policing to the entire MPD. Metropolitan Police District The Metropolitan Police District (MPD) is the police area which is policed by the Metropolitan Police Service in