== Fungsi legislatif ==
[[Fail:Palace of Westminster, London - Feb 2007.jpg|right|300px|thumb|Parlimen bertemu dengan [[Istana Westminster]].]]
Laws can be made by Acts of the United Kingdom Parliament. While Acts can apply to the whole of the UK including Scotland, due to the continuing separation of [[ Scots law]] many Acts do not apply to Scotland and are either matched by equivalent Acts that apply to Scotland alone or, since 1999, by legislation set by the [[ Scottish Parliament]] relating to devolved matters.
This has led to what is known as the [[West Lothian question]]: the situation where Westminster MPs for Scottish constituencies may vote on legislation that will have no direct effect on Scotland.
Laws, in draft form known as bills, may be introduced by any member of either House, but usually a bill is introduced by a Minister of the Crown. A bill introduced by a Minister is known as a "Government Bill"; one introduced by another member is called a "[[Private Member's Bill]]". A different way of categorising bills involves the subject. Most bills, involving the general public, are called "[[Public Bill]]s". A bill that seeks to grant special rights to an individual or small group of individuals, or a body such as a local authority, is called a "[[Private Bill]]". A Public Bill which affects private rights (in the way a Private Bill would) is called a "[[Hybrid Bill]]".
Private Members' Bills make up the majority of bills, but are far less likely to be passed than government bills. There are three methods for an MP to introduce a Private Member's Bill. The Private Members' Ballot (once per Session) put names into a ballot, and those who win are given time to propose a bill. The [[Ten Minute Rule]] is another method, where MPs are granted ten minutes to outline the case for a new piece of legislation. Standing Order 57 is the third method, which allows a bill to be introduced without debate if a day's notice is given to the Table Office. [[Filibuster]]ing is a danger, as an opponent to a bill can waste much of the limited time allotted to it. Private Members' Bills have no chance of success if the current government opposes them, but they are used in moral issues: the bills to decriminalise [[homosexuality]] and [[abortion]] were Private Members' Bills, for example. Governments can sometimes attempt to use Private Members' Bills to pass things it would rather not be associated with. "Handout bills" are bills which a government hands to MPs who win Private Members' Ballots.