In the United Kingdom, the term military police refers to the three branches of service police, responsible for policing armed forces personnel. The Royal Military Police polices the British Army, the Royal Navy Police polices the Royal Navy, and the Royal Air Force Police polices the Royal Air Force.
There are also a number of civilian police forces whose role is to police parts of the Defence Estate, in the UK and overseas, such as the Ministry of Defence Police, but such forces are not considered military police.