Prime Minister of the United Kingdom the incumbent is consistently ranked as one of the most powerful and influential people in the world. The Prime Minister is the head of the United Kingdom government. As such, 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). The incumbent wields both significant legislative and executive powers. Under the British system, there is a unity of powers rather than separation. In the House of Commons, the Prime Minister guides the law-making process with
Leader of the House of Commons every Thursday. When there is either no Deputy Prime Minister or First Secretary of State, the Leader of the House may stand in for an absent Prime Minister at Prime Minister's Questions. The Osmotherly Rules, which set out guidance on how civil servants should respond to parliamentary select committees, are jointly administered by the Office of the Leader of the House of Commons and the Cabinet Office. Leader of the House of Commons The Leader of the House of Commons is generally a member of the Cabinet of the United Kingdom who is responsible for arranging government business in the