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
Harriet Harman Labour Party and Brown was appointed Prime Minister, Harman joined Brown's Cabinet as Leader of the House of Commons, Lord Privy Seal and Minister for Women and Equality, and was also Chairman of the Labour Party. Unlike the previous Deputy Leader, John Prescott, Harman was not made Deputy Prime Minister. When Harman, as Leader of the House of Commons, stood in for Gordon Brown during Prime minister's questions on Wednesday 2 April 2008 (due to the Prime Minister attending a NATO summit in Romania), she became the first female Labour Minister to take Prime Minister's Questions. She subsequently repeated this