His Majesty's Diplomatic Service

His Majesty's Diplomatic Service (HMDS) is the diplomatic service of the United Kingdom of Great Britain and Northern Ireland, dealing with foreign affairs and representing British interests overseas, as opposed to the Civil Service, which deals with domestic affairs. It employs around 14,000 people, roughly one-third of whom are crown servants working directly for the Foreign, Commonwealth and Development Office, either in London or abroad.

Source: Wikipedia — His Majesty's Diplomatic Service (CC BY-SA 4.0)