History of the Metropolitan Police Service by the end of the 19th century. During the 1860s, the flintlock pistols that had been purchased in 1829 were decommissioned from service, being superseded by 622 Beaumont–Adams revolvers firing the .450 cartridge which were loaned from the army stores at the Tower of London following the Clerkenwell bombing. In 1883, a ballot was carried out to gather information on officers' views on whether they wished to be armed, and 4,430 out of 6,325 officers serving on outer divisions requested to be issued with revolvers. The now obsolete Adams revolver was returned to stores for emergencies, and the Bulldog 'Metropolitan
Metropolitan Police Service powers and uniform as their regular colleagues. This makes the Metropolitan Police, in terms of officer numbers, the largest police force in the United Kingdom by a significant margin, and one of the biggest in the world. In terms of its police area (primary geographic area of responsibility), leaving its national responsibilities aside, the Met has the 8th smallest police area of the territorial police forces in the United Kingdom. The overall operational leader of the force is the Commissioner, whose formal title is Commissioner of Police of the Metropolis. The Commissioner is answerable, responsible and accountable to The Queen,