Ponsonby Rule

The Ponsonby Rule was a constitutional convention in the United Kingdom constitutional law that dictated that most international treaties had to be laid before Parliament 21 days before ratification.

On 11 November 2010 Part 2 of the Constitutional Reform and Governance Act 2010 was brought into force by a commencement order. Part 2 of the Act deals with the ratification of treaties and puts Parliamentary scrutiny of treaties on a statutory footing, effectively replacing the Ponsonby Rule.