The MPS form part of the Adjutant General's Corps and are based at the Military Corrective Training Centre (MCTC) in Colchester, Essex.

The Military Prison Staff Corps (MPSC) was formed in 1901 under Army Order 241.

[2] When initially formed as the MPSC, the corps were based in strategical footholds all over the world.

As of 2023 the MPS regiment only retains the following custody facilities:[3] In 2022, Conservative MP, Will Quince, signed up to be a reservist in the corps.

[4] As of 2024, all of the regiment's regular members hold a minimum rank of corporal.