The Gibraltar Defence Police (GDP) is a civil police force which provides a policing and security service for the Ministry of Defence in Gibraltar. Prior to 17 December 2009 it was known as the Gibraltar Services Police (GSP).

British Forces Gibraltar is the British Armed Forces stationed in the British overseas territory of Gibraltar. Gibraltar is used primarily as a training area, thanks to its good climate and rocky terrain, and as a stopover for aircraft and ships en route to and from deployments East of Suez or in Africa.