Territorial Support Group
Overview
The Territorial Support Group (TSG or CO20) is a Central Operations
Central Operations
Central Operations is a major directorate of the London Metropolitan Police Service that provides operational support to the rest of the service...

 unit of London
London
London is the capital city of :England and the :United Kingdom, the largest metropolitan area in the United Kingdom, and the largest urban zone in the European Union by most measures. Located on the River Thames, London has been a major settlement for two millennia, its history going back to its...

's Metropolitan Police Service
Metropolitan Police Service
The Metropolitan Police Service is the territorial police force responsible for Greater London, excluding the "square mile" of the City of London which is the responsibility of the City of London Police...

 (MPS) consisting of 720 officers, that specialises in public order containment among other specialist policing. The TSG is a uniformed unit of the MPS that replaced the controversial Special Patrol Group
Special Patrol Group
The Special Patrol Group 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....

 in 1987. TSG units patrol the streets of the capital in marked police van
Police van
A police van is a type of vehicle operated by police forces. Police vans are usually employed for the transportation of prisoners inside a specially adapted cell in the vehicle, or for the rapid transportation of a number of officers to an incident.- History :Early police vans were in the form of...

s; officers can be identified as TSG from the distinctive 'U' in their shoulder number
Collar number
A collar number, also known as a shoulder number, Force Identification Number or occasionally as Force Number , identifies uniformed officers, Police Community Support Officers , and some police staff in UK police forces. Although now displayed on epaulettes A collar number, also known as a...

s.
Today the TSG has three main tasks in the policing of the Metropolitan Police District
Metropolitan Police District
The Metropolitan Police District is the police area which is policed by London's Metropolitan Police Service. It currently consists of Greater London, excluding the City of London.-History:...

:
  • Securing the capital against terrorism
    Terrorism
    Terrorism is the systematic use of terror, especially as a means of coercion. In the international community, however, terrorism has no universally agreed, legally binding, criminal law definition...

    .
  • Responding to disorder anywhere within London.
  • Reducing priority crime through borough
    London borough
    The administrative area of Greater London contains thirty-two London boroughs. Inner London comprises twelve of these boroughs plus the City of London. Outer London comprises the twenty remaining boroughs of Greater London.-Functions:...

     support.

Although public order is not the TSG's only role, it is certainly their most visible and well-known.
 
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