The Military Provost Staff Corps (MPSC) was the corps of the British Army which ran its military prisons. As the Military Provost Staff (MPS), the corps is now administratively part of the Adjutant General's Corps. It also provides operational support and technical advice for Prisoner of War handling during conflicts and monitors PoWs in custody.
The Military Prison Staff Corps was formed in 1901. It was redesignated the Military Provost Staff Corps in 1906. It became part of the Adjutant General's Corps (AGC) on 6 April 1992, forming the Provost Branch along with the Royal Military Police. It retains a separate identity within the AGC, however, keeping its cap badge and other symbols.