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,
History of the Metropolitan Police Service were physically assaulted, others impaled, blinded, and on one occasion held down while a vehicle was driven over them. One of the priorities of the Metropolitan Police from the beginning was "maintaining public order", which they were active in doing, against the major Chartist demonstrations (1839–48) and the Bloody Sunday demonstration of the unemployed in Trafalgar Square in 1887. In 1839, the Bow Street Runners, the Foot and Horse Patrol and the Thames River Police were amalgamated with the Metropolitan Police. However, the City of London Police, created in the same year was an independent force. In 1842 taking over