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 years, the post has been held jointly with that of Lord President of the Council, Lord Privy Seal, or First Secretary of State. The Leader is assisted in the Office of the Leader of the House of Commons by the Deputy Leader of the House of Commons. At times the nominal leadership was held by the Prime Minister but the day-to-day work was done by a Deputy. At other times a Deputy was appointed merely to enhance an individual politician's standing within the government. However, since 2010 the Deputy Leader of the House of Commons has been a ministerial role