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
Prime Minister of Canada with the augmentation. Canada continues the Westminster tradition of using the title "Prime Minister" when one is speaking to the federal head of government directly; this is in contrast to the United States protocol of addressing the federal head of government as "mister" (as in, "Mister President"); the Department of Canadian Heritage advises that it is incorrect to use the term "Mr Prime Minister". The written form of address for the prime minister should use his or her full parliamentary title: "The Right Honourable [name], <nowiki>[</nowiki>post-nominal letters<nowiki>]</nowiki>, Prime Minister of Canada". However, while in the House of Commons during Question