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 During the 1860s, the flintlock pistols that had been purchased in 1829 were decommissioned from service, being superseded by 622 Beaumont–Adams revolvers firing the .450 cartridge which were loaned from the army stores at the Tower of London following the Clerkenwell bombing.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
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