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United Kingdom Parliamentary Sovereignty Bill

A Bill to reaffirm the sovereignty of the United Kingdom Parliament; and for connected purposes.

What this bill does

The Bill seeks to confirm the sovereignty of the UK Parliament by prohibiting the Government from signing, ratifying or implementing a treaty or law which increases the powers of the European Union over the United Kingdom, unless it has first been approved in a UK referendum.If enacted, the Bill would override the requirements of the European Communities Act 1972, the rule of prerogative, the rule of international law, and any other Act of Parliament, unless the latter expressly stated to the contrary. The requirement for the Queen to withhold Assent from a Bill without a referendum first having been won would seem to interfere with a constitutional personal prerogative of the Crown.

Originating House

House of Commons

Parliament last updated

13 April 2010

In Plain English

AI-generated

May contain errors — check source documents for definitive information.

The bill asserts that Parliament is sovereign in the UK and would require a UK referendum before any treaty or law could increase the powers of the European Union. It would override existing rules (like the European Communities Act 1972, prerogative powers, and international law) unless those rules expressly say otherwise, and it notes potential conflicts with the Crown’s royal assent.

Key Points

  • Declares the sovereignty of the UK Parliament over other authorities.
  • Requires a UK referendum before approving treaties or laws that increase EU powers.
  • Overlays or overrides the European Communities Act 1972, prerogative powers, and international law unless expressly stated otherwise.
  • Highlights possible conflict with the Crown’s royal assent.
  • Originated in the House of Commons and has reached the 2nd reading in the Commons (2010).

Progress

The bill is currently at the 2nd reading in the House of Commons. It originated in the Commons and had its first reading in January 2010.

Who is affected?

UK citizensMembers of Parliament and Government ministersThe Crown (Monarchy)UK businesses and organisations dealing with EU law or international treatiesLegal professionals and constitutional lawyers

Generated 21 February 2026

Bill Stages

1st readingCommons

13 Jan 2010

2nd readingCommons
Committee stageCommons
Report stageCommons
3rd readingCommons
1st readingLords
2nd readingLords
Committee stageLords
Report stageLords
3rd readingLords
Royal Assent

Updates & Documents

News (1)

News - United Kingdom Parliamentary Sovereignty

1 Jan 1970

This Bill was presented to Parliament on 13 January 2010. This is known as First Reading and there was no debate on the Bill at this stage.

The 2009-10 session of parliament has prorogued and this Bill will make no further progress.

Documents (1)

Bill 48 09-10 (as introduced)
BillCommons
14 Jan 2010

Parliamentary Votes (0)

No recorded votes for this bill yet.