[1][2]: 108 In 2010, Plaid Cymru and the SNP formed a "Celtic Alliance" with the aim of increasing their influence on a UK government via agreements over policies and funding.
[4] In a Plaid Cymru conference in 2019, leader of Sinn Fein, Mary Lou McDonald stated "We need a pan-celtic anti-Tory political culture.
he also suggested that "If they could find a way of working together in their mutual interest, that’s a fair degree of combined influence, particular if the next General Election produces a hung parliament.
"[7] In July 2023, the Welsh Government announced a "Celtic Heritage – Cornwall-Wales Collaboration Agreement" focused on cooperation in the following areas; In August 2023, political leaders from Ireland, Scotland, Wales, Cornwall, Brittany, Galicia and Asturias met at the first ever Celtic Forum.
Areas of discussion included a "Celtic Erasmus", Maritime transport, fishing & offshore wind power and native languages.