The Special Patrol Group (SPG) was a unit of Greater London's Metropolitan Police Service, responsible for providing a centrally-based mobile capability for combating serious public disorder and crime that could not be dealt with by local divisions.
The SPG was active from 1961 to 12 January 1987, being replaced by the Territorial Support Group.
The SPG recruited experienced officers capable of working as disciplined teams, either in uniform or in plain clothes preventing public disorder, targeting areas of serious crime, carrying out stop and searches, or providing a response to terrorist threats. It also conducted its own surveillance and was tasked with reducing the problem of burglaries. During the time it was active it had a dedicated radio channel and a fleet of vans to allow it to work independently of routine divisions.
The SPG originally consisted of four units based throughout London. This was increased to six and finally to eight. Each unit was made up of an inspector, three sergeants and thirty constables.
Its position within the Metropolitan Police was unusual; whereas the Flying Squad became the symbol of the Criminal Investigation Department in London, the SPG became recognised as a unit that efficient uniformed officers could aspire to join. As such it had an exceptionally high level of esprit de corps.
Other police forces outside London created their own versions of the Special Patrol Group. The Greater Manchester Police created the Tactical Aid Group (TAG) in 1977. The Merseyside Police formed the Task Force in 1974 which was later disbanded in 1978 and replaced with the Operational Support Division (OSD).