who lives next door to the prime minister
Downing Street For more than three hundred years it has held the official residences of the First Lord of the Treasury, an office now synonymous with that of Prime Minister, and the Second Lord of the Treasury, an office held by the Chancellor of the Exchequer. The Prime Minister's official residence is 10 Downing Street; the Chancellor's official residence is next door at Number 11. The government's Chief Whip has an official residence at Number 12, although the current Chief Whip's residence is at Number 9.
Prime Minister of the United Kingdom The Prime Minister is the head of Her Majesty's Government in the United Kingdom.[6][better source needed] As the "Head of Her Majesty's Government" the modern Prime Minister leads the Cabinet (the Executive). In addition the Prime Minister leads a major political party and generally commands a majority in the House of Commons (the lower house of the legislature). As such the incumbent wields both legislative and executive powers. Under the British system there is a unity of powers rather than separation.[7] In the House of Commons, the Prime Minister guides the law-making process with the goal of enacting the legislative agenda of their political party. In an executive capacity the Prime Minister appoints (and may dismiss) all other cabinet members and ministers, and co-ordinates the policies and activities of all government departments, and the staff of the Civil Service. The Prime Minister also acts as the public "face" and "voice" of Her Majesty's Government, both at home and abroad. Solely upon the advice of the Prime Minister, the Sovereign exercises many statutory and prerogative powers, including high judicial, political, official and Church of England ecclesiastical appointments; the conferral of peerages and some knighthoods, decorations and other honours.[8]