Provost Marshal (Army) exists to police the force, which includes activities concerned with investigations, custodial matters and security in the UK. Activity is supported by RMP Units, specialist organisations (Special Investigations Branch and Specialist Operations Regiment), as well as the MPS for custodial matters and the MPGS for establishment security.
The 1st Royal Military Police Group provide police support to the force at an operational level, usually overseas, and includes operational detention, and support to security and stability policing. This is supported by the RMP and MPS. The Brigade sits under the tactical command of 3 (UK) Division.