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,
Police uniforms and equipment in the United Kingdom the Metropolitan Police Service, due to it being recognised as the first police service in England. The base colour is a very dark blue, almost indistinguishable from black (and recently often is black), which earned the police the nickname of the "boys in blue". The Metropolitan Police officers were unarmed to clearly distinguish them from military enforcers, which had been the system of policing seen before the 1820s. Their uniform was also styled in blue, rather than the military red. Despite the service being unarmed, the then Home Secretary, Robert Peel, gave authorisation to the Commissioner to purchase fifty flintlock