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 Service a fleet of more than 8,000 vehicles, which are used for a range of duties, including: The majority of vehicles have a service life of three to five years; the Met replaces or upgrades between 800 and 1,000 vehicles each year. As of 2012, the Met has transitioned all new vehicles into the Battenburg markings, which is a highly-reflective material on the side of the vehicles, chequered blue and yellow (symbol of police). The old livery was an orange stripe through the vehicle, with the force's logo. However, these liveries are becoming hard to find, as all new vehicles are