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
David Miliband Miliband's first Foreign Office questions session as Foreign Secretary in the House of Commons was on 3 July 2007. On the morning of 13 December 2007, Miliband stood in for Prime Minister, Gordon Brown at the official signing ceremony in Lisbon of the EU Reform Treaty, which was attended by all other European heads of government. Brown was otherwise engaged at the House of Commons, appearing before the Liaison Committee, and travelled to Portugal to sign the treaty in the afternoon. He was left on his own again by the Prime Minister to speak in favour of the European Union