Legislation in the United Kingdom comes from a number of different sources:

• Acts of the United Kingdom Parliament
• statutory instruments (eg orders and regulations) made by a Minister or by the Queen in Council, generally subject either to parliamentary approval (affirmative procedure) or parliamentary dissallowance; these are made either under Acts or by the royal prerogative.
• Acts of the devolved Scottish Parliament, and statutory instruments made by the Scottish Executive (likewise subject to approval or disallowance by the Scottish Parliament)
• Statutory instruments made by the National Assembly for Wales
• Acts of the Northern Ireland Assembly, and statutory instruments made by Northern Ireland Departments
• Decisions, directives and regulations of the European Communities.

See also: List of Acts of Parliament in the United Kingdom.