The pro-independence leaders of Scotland, Wales and Northern Ireland have scheduled a Cardiff summit for Sept. 14 to discuss cooperation on four policy areas, including self-determination.
Summary
- Three pro-independence first ministers plan Monday talks covering self-determination, economic policy, energy, and European relations.
- The Telegraph reports leaders will sign an agreement, but officials have not published its text.
- Welsh First Minister Rhun ap Iorwerth rejected claims that the summit seeks Britain’s immediate breakup.
- Scotland cannot hold an independence referendum unilaterally because constitutional matters remain reserved to Westminster authorities.
- Northern Ireland’s statutory referendum route depends on a judgment by Britain’s Northern Ireland secretary alone.
The Telegraph reported on Sept. 13 that Scottish First Minister John Swinney, Welsh First Minister Rhun ap Iorwerth and Northern Ireland First Minister Michelle O’Neill would sign a joint declaration or memorandum of understanding.
Mary Lou McDonald, Sinn Féin’s president and leader of the opposition in Ireland’s Dáil, is expected to join the meeting at St David’s Hotel in Cardiff Bay. A press conference is planned after the talks.
The reported agreement covers the economy, energy, relations with Europe and national self-determination. Its full text had not been published by the devolved governments or the participating parties as of Sept. 13.
Ap Iorwerth has rejected the claim that the gathering is designed to dismantle the U.K. Speaking to The Guardian before the summit, he said he did not approach cooperation with other nationalist parties as an effort “to break up the UK.”
“I want to build up my nation,” the Plaid Cymru leader said. He described Welsh independence as the eventual destination of a constitutional process, while stressing that the choice remained with voters and had no fixed timetable.
Cardiff summit will focus on four shared areas
The planned memorandum is expected to commit the SNP, Plaid Cymru and Sinn Féin to cooperation where their policies overlap. Each party supports a different constitutional outcome because the legal and political position of every nation varies.
On economic policy, participants are expected to argue that the current U.K. model has not served people in the three devolved nations. The Telegraph reported that the parties would discuss tax and spending authority, energy resources and changes to the distribution of public money.
Plaid Cymru wants the U.K. government to transfer more fiscal powers to Wales. Its requests include revenue from the Crown Estate’s Welsh assets, including seabed leases used by offshore wind projects.
The party wants policing and justice devolved to Cardiff. Ap Iorwerth noted that, during his time as mayor of Greater Manchester, Prime Minister Andy Burnham exercised more influence over policing than the Welsh first minister currently holds.
A Plaid source described cooperation on energy, the economy and Europe as practical work among parties sharing several interests. The source said the parties could operate “as partners and as equals” without presenting every policy question as part of an immediate independence campaign.
Independence votes follow different legal routes
Scotland’s constitutional route remains controlled by Westminster unless the legal framework changes. In its 2022 judgment, the U.K. Supreme Court ruled that the Scottish Parliament could not legislate unilaterally for an independence referendum because the proposed vote related to reserved matters.
The 2014 Scottish referendum proceeded after the U.K. and Scottish governments agreed temporarily to transfer the required authority through a Section 30 order. No equivalent authorization has been granted for another vote.
Burnham has said he would consider a further Scottish referendum if a “clear consensus” supported one. His government has not defined the polling, electoral or parliamentary conditions that would establish such a consensus.
In a letter to Swinney, the prime minister maintained that another Scottish vote was “off limits” before the next general election. Burnham cited Labour’s 2024 manifesto, which opposed Scottish independence and another referendum.
Northern Ireland has a separate legal pathway under the 1998 Belfast Agreement and the Northern Ireland Act. The legislation requires the Northern Ireland secretary to call a border poll if it appears likely that a majority would vote to leave the U.K. and join a united Ireland.
No published government decision has determined that the statutory test has been met. Sinn Féin maintains that preparation for a poll should begin now, while the U.K. government says there is no clear basis to conclude that most Northern Irish voters currently support reunification.
Wales has no comparable statutory mechanism for an independence referendum. Any binding process would require agreement with Westminster or new legislation establishing the authority and terms for a vote.
Welsh leader rejects immediate breakup framing
Ap Iorwerth became first minister after Plaid Cymru emerged as the largest party in the May 2026 Senedd election. The result ended Labour’s record of being the largest party at every Welsh parliamentary election since devolution began.
Plaid holds 43 seats in the expanded 96-member Senedd. Reform UK became the main opposition with 34 seats, placing constitutional questions alongside disputes over public spending, policing and economic policy.
In Scotland, the SNP retained power during the 2026 Holyrood election despite losing six seats. Swinney has since promoted cooperation among the three nationalist-led administrations.
“For the first time ever, Scotland, Wales and Northern Ireland are led by pro-independence first ministers,” Swinney said before the Cardiff meeting. His claim that the arrangement proves the existing settlement is “not sustainable” represents the SNP’s political position, not an agreed constitutional finding.
Northern Ireland’s power-sharing system places O’Neill in a joint leadership structure with the deputy first minister. Decisions requiring Northern Ireland Executive authority cannot generally be made by the first minister acting alone. The Telegraph’s account refers to cooperation among the participating parties, but the unpublished agreement will determine whether any commitments are governmental or political.
Reform’s funding raises a separate political issue
The Cardiff meeting comes as Reform has expanded its financial resources across Britain. In related coverage, crypto.news reported that two crypto billionaires gave Reform UK £72 million through matching contributions announced within 24 hours.
Christopher Harborne, an investor in Tether and Bitfinex, and BitMEX co-founder Ben Delo each donated £36 million. Neither contribution was confirmed as a cryptocurrency payment. Reform said both donations complied with existing law.
The U.K. government is separately pursuing a prohibition on political donations made with cryptocurrency and a £100,000 annual limit for qualifying overseas electors. The proposed restrictions would not apply merely because a donor earned money in the crypto industry.
Crypto.news previously reported that lawmakers had requested a moratorium on cryptocurrency political donations until stronger source-verification rules could be introduced.
Ap Iorwerth said Plaid Cymru could cooperate with Labour to prevent Reform from entering government. He framed the position as opposition to Reform’s politics, while acknowledging the party’s strong Welsh election result.
The first ministers are scheduled to hold their Cardiff talks on Sept. 14 and address reporters afterward. Publication of the memorandum would establish its final language, signatories and whether its commitments apply to the parties or their devolved administrations.
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