The Gibraltar Defence Police (GDP) is a civil police force which guards and enforces law on Ministry of Defence installations in Gibraltar. Prior to 17 December 2009 it was known as the Gibraltar Services Police (GSP). It has 127 sworn officers and 16 civilian personnel.
Pay and conditions of the force are identical to those of the Ministry of Defence Police (MDP) in the United Kingdom, of which it is a direct equivalent. The Gibraltar Defence Police Federation represents the interests of constables and sergeants.
The force has a Marine Unit, founded in 1998, which consists of a sergeant and over twenty constables. It is charged with the seaward defence of Gibraltar's Royal Navy facilities and the warships moored in them, and also assists the Royal Gibraltar Police Marine Section with general security and enforcement patrols of waters surrounding Gibraltar. It operates two motor launches and two rigid-hulled inflatable boats (RHIBs). The original 10-metre motor launches of 1998 were replaced in 2003 with larger and faster 15-metre launches. One of these was itself replaced with a newer boat in 2012. The RHIBs are Arctic 24 type boats, capable of speeds up to 55 knots. Since 2011 the police marine unit has shared a headquarters and boat house with the Gibraltar Squadron of the Royal Navy. The boathouse holds the Navy's 5 patrol boats and RHIBs, and the police's 4 patrol boats and RHIBs.
The GDP dog section was formed in 2012, and consists of a team of handlers, led by a sergeant, and six general purpose dogs. The initial six dogs are of the Belgian Shepherd Dog (Malinois) and Dutch Shepherd Dog breeds. The GDP previously relied on service dogs and handlers seconded from United Kingdom police forces, but as part of the GDP Project Euston, which seeks to replace all secondment from UK forces with locally provided Gibraltarian services, the GDP dog section has been established.