Leaders of the nationalist parties of Scotland, Gales, and Northern Ireland are gathering in Cardiff to sign a memorandum of understanding on September 14, 2026, demanding that the British government authorize new independence referendums.
The Cardiff Summit and Nationalist Strategies
The participants are attending in their capacities as party leaders rather than as representatives of their regional governments, according to Infobae. The coalition of regional movements aims to increase political pressure on British Prime Minister Andy Burnham by coordinating their constitutional campaigns.

While all three parties challenge the concentration of power in Westminster, their ultimate constitutional goals differ:
- Scotland: John Swinney’s SNP seeks a new referendum to separate from the United Kingdom, following the 2014 vote where a majority chose to remain and others voted for independence, as reported by Infobae. Swinney stated that “for the first time in history, Scotland, Gales, and Northern Ireland are governed by pro-independent first ministers,” adding that the current status quo is unsustainable.
- Gales: Rhun ap Iorwerth and Plaid Cymru seek expanded devolved powers—including local control over policing and justice—with independence as the ultimate horizon, according to Infobae. Ap Iorwerth criticized Westminster control, noting that he currently holds fewer policing powers as Welsh first minister than Andy Burnham held as mayor of Manchester.
- Northern Ireland: Michelle O’Neill and Sinn Féin focus on ending British rule to achieve a reunified Ireland under the mechanisms established by the 1998 Good Friday Agreement, which allows for a border poll if public support for unification becomes apparent. Mary Lou McDonald, leader of the Irish opposition party Sinn Féin, is also expected to attend the Cardiff meetings.
Westminster Response and International Context
British Prime Minister Andy Burnham has firmly rejected demands for a new Scottish independence vote, stating in the House of Commons that the issue remains “out of discussion” unless clear majority support among the Scottish population is demonstrated, according to Infobae. Burnham maintained that he has seen no evidence of majority backing for another referendum since the 2014 ballot.
The summit arrives two days after United States President Donald Trump remarked during a visit to Dublin that he would like to see a united Ireland happen “sooner or later,” comments that drew criticism from opposition parties across the United Kingdom, as noted by Infobae.
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