The Metropolitan Police Service (MPS), commonly known as the Metropolitan Police and informally as the Met, is the territorial police force responsible for law enforcement in Greater London, excluding the "square mile" of the City of London, which is the responsibility of the City of London Police. Since January 2012, the Mayor of London is responsible for the governance of the Metropolitan Police through the Mayor's Office for Policing and Crime (MOPAC). This functional body of the Greater London Authority came into being in 2012 and replaced the Metropolitan Police Authority.
