[3] In 2001, the assembly was enlarged to include representatives of legislative bodies in Scotland, Wales, Northern Ireland, the Isle of Man, Guernsey and Jersey.

The fortieth plenary conference of the British–Irish Parliamentary Assembly met in Cavan, Ireland on 22–23 February 2010.

[5] In October 2018, British Secretary of State for Northern Ireland Karen Bradley spoke to the assembly.

[6] In October 2019, the British Minister of State for Europe and the Americas, Christopher Pincher spoke to the assembly about the importance of UK-Ireland co-operation after Brexit.

[7] The 62nd meeting in October 2022 brought Lawmakers from Ireland, the British legislatures, the Crown Dependencies and British Overseas Territories to discuss matters of mutual interest, debate trade and publish reports on a range of issues including post Brexit trade and vaccine rollout.