The Ministry of Defence Police (MDP) is a civilian special police force which is part of the United Kingdom's Ministry of Defence. The MDP's primary responsibilities are to provide armed security and counter terrorism services to designated high-risk areas, as well as uniformed policing and limited investigative services to Ministry of Defence property, personnel, and installations throughout the United Kingdom. The MDP are not military police and should not be confused with the Royal Military Police or any other British Service Police. Service personnel often refer to the MDP by the nickname "MOD plod".