Prime Minister of the United Kingdom

The Prime Minister of the United Kingdom (informally abbreviated to PM) is the head of government of the United Kingdom. The prime minister directs both the executive and the legislature, and together with their Cabinet is accountable to the monarch, to Parliament, to their party, and ultimately to the electorate, for the government's policies and actions.

The prime minister is ex officio also First Lord of the Treasury and Minister for the Civil Service. Indeed, certain privileges, such as residency of 10 Downing Street, are accorded to prime ministers by virtue of their position as First Lord of the Treasury.

The status and executive powers of the British prime minister means that the incumbent is consistently ranked as one of the most powerful and influential people in the world.