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 cadets in the United Kingdom which was traditionally held in Hendon, in North London, for the annual Police Cadet Competition. This involved cadets competing in a range of police activities and scenarios, in which they were competitively assessed. In 2015 the Metropolitan Police announced that the Cadet Competition was no longer to be held at Hendon due to the resizing of Hendon; some of the land was sold off for development. However, the Annual Cadet Competition continues a long tradition at the GRAVESEND public order site. 2013 also saw the launch of Junior Police Cadets capturing those young people from school Year 6 to Year