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 During the 1860s, the flintlock pistols that had been purchased in 1829 were decommissioned from service, being superseded by 622 Beaumont–Adams revolvers firing the .450 cartridge which were loaned from the army stores at the Tower of London following the Clerkenwell bombing.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 a London borough) is a separate police area and is the responsibility of the separate City of London Police. The Ministry of Defence Police are responsible for policing of Ministry of Defence property throughout the United Kingdom, including its headquarters in Whitehall and other MoD establishments across the MPD. The British Transport Police are responsible for policing of the rail network in the United Kingdom, including London. Within London, they are also responsible for the policing of the London Underground, Tramlink, The Emirates Air Line (cable car) and the Docklands Light Railway. The English part of the Royal Parks Constabulary,