History of the Metropolitan Police
The history of the Metropolitan Police in London is long and complex, with many different events taking place between its inception in 1829 and the present day. == Pre-1829 London policing == Before the passing of the Metropolitan Police Act 1829, law enforcement among the general population in England was carried out by unpaid parish constables who were elected, and later appointed by the local justice of the peace.
Source: Wikipedia — History of the Metropolitan Police (CC BY-SA 4.0)