Scotland, Wales, and Northern Ireland are planning to work together to draft a joint framework for seceding from the United Kingdom.

To this end, the First Ministers of the three nations are convening for an unprecedented joint meeting on Monday (September 14) at the five-star St. David’s Hotel in Cardiff, the capital of Wales.

British media outlet The Telegraph reported this information in a report on Sunday (September 13).

According to the report, Scottish First Minister John Swinney, Welsh First Minister Rhun ap Iorwerth, and Northern Irish First Minister Michelle O'Neill will participate in this historic meeting.

They will be joined by Mary Lou McDonald, leader of Ireland's opposition party Sinn Féin.

Following the meeting, the leaders are scheduled to sign a joint declaration demanding self-determination and the right to independence referendums.

For the first time in history, the leadership of all three devolved governments within the UK is held by pro-independence parties.

Scottish First Minister John Swinney stated that the rise of pro-independence leadership across all three countries proves the current central constitutional arrangement is no longer sustainable.

He added that Westminster must now begin preparing for a "post-UK" future.

During the Cardiff meeting, a Memorandum of Understanding based on four main pillars—economy, energy, international cooperation, and self-determination—is expected to be signed.

The leaders agree on Scotland and Wales joining the European Union as independent states, and Northern Ireland returning to the EU through Irish reunification.

Additionally, demands will be raised to increase Wales's powers over taxation and revenue collection.

However, UK Prime Minister Andy Burnham stated that there is no scope for any independence referendum in the near future.

In a letter sent to John Swinney, Burnham noted that, in accordance with his government's manifesto elected in 2024, proposals for independence or a new referendum are categorically rejected.

Meanwhile, just two days prior to the meeting, US President Donald Trump publicly voiced support for a united Ireland during a visit to Dublin, adding a new dimension to the issue.

Despite strong objections from the UK government, political analysts view this step by the three nations to establish a joint framework as a clear signal of the UK's fragmentation.