This happened in 2011 and have been valid since 1215.
From (with many thanks): http://www.nominedeus.co.uk/?page_id=263
” Barons committee
FOUR peers invoked ancient rights under the Magna Carta yesterday to petition the Queen to block closer integration with Europe.
The Duke of Rutland, Viscount Masserene and Ferrard, Lord Hamilton of Dalzell and Lord Ashbourne were imbued with the spirit of the ancient Charter, thrust on King John in 1215. In accordance with the Charter’s Clause 61, the famous enforcement clause, the four presented a vellum parchment at Buckingham Palace, declaring that the ancient rights and freedoms of the British people had to be defended.
The clause, one of the most important in the Charter, which was pressed on King John at Runnymede, allows subjects of the realm to present a quorum of 25 barons with a petition, which four of their number then have to take to the Monarch, who must accept it. It was last used in 1688 at the start of the Glorious Revolution.
from this piece
a full list of Barons
Peers signing the petition: Lord Ashbourne, The Duke of Rutland, Viscount Massereene & Ferrard (as Lord Oriel) Lord Hamilton of Dalzell signed and presentated the petition at Buckingham Palace.
The petition was also signed by:
Lord Sudeley, Viscount Cowdray, Viscount Norwich, Lord Napier & Ettrick, Earl of Romney, Earl Kitchener, Lord Napier of Magdala, Lord Ailsa, Lord Sandys, Earl Cathcart, Lord Oaksey, Lord Milne, Lord Newall, Lord Barber of Tewkesbury, Lord Dormer, Viscount Exmouth, Lord Wise, Earl of Devon, Earl of Cromer, Earl of Shannon (as Lord Carleton), Lord Sandford, Marquis of Aberdeen (as Earl Aberdeen), Lord Strathcarron, Lord Craigmyle.
The Countess of Dysart also signed but the Dysart title is Scottish and pre-dates the Union of 1707.
my thanks to The Secret People “