For the first time since devolution began nearly three decades ago, the governments of Scotland, Wales and Northern Ireland are all led by parties whose founding purpose is to end their nations’ membership in the United Kingdom. That fact alone would have seemed extraordinary a decade ago. What has changed in recent months is that the three administrations have started acting less like separate, occasionally sympathetic neighbours and more like partners quietly comparing notes on how a shared exit from Westminster’s orbit might actually work.
The shift became visible after May’s devolved elections handed governing power to the Scottish National Party in Edinburgh, Plaid Cymru in Cardiff and Sinn Féin in Belfast. None of the three could claim a mandate for immediate secession, and pollsters were quick to point out that plenty of voters backed these parties for reasons that had little to do with the constitution: frustrated health services, stagnant wages and a general sense that London had stopped listening. But the arithmetic of power is what it is, and it has put avowed nationalists in charge of every devolved government in the United Kingdom except England, which has none.
What is new, and worth paying attention to, is the informal coordination now taking shape between the three capitals. Meetings that once happened rarely and mostly for show, such as the Joint Ministerial Committee sessions of the Brexit years, are being supplemented by more frequent contact between the first ministers’ offices. Officials in Edinburgh, Cardiff and Belfast have begun discussing a shared research and legal function, an idea sometimes described informally as a joint constitutional unit, that would pool analysis on the practical mechanics of leaving the union: currency arrangements, pension liabilities, defence assets, and how existing UK-wide institutions might be divided or duplicated. None of this amounts to a formal secession plan, but it is a meaningful departure from decades of each nation pursuing its own constitutional question in isolation.
The pressures driving this cooperation are strikingly similar across all three nations. Scotland’s push rests on a straightforward democratic argument: a nation that consistently rejects a governing party at Westminster should not be permanently bound by that party’s decisions, from Brexit onward. Wales, historically the most reluctant of the three, has been pulled into the conversation partly by economic grievance over funding formulas and partly by a Senedd election that rewarded parties promising a fundamentally different relationship with London. Northern Ireland’s path is distinct, since any change to its status runs through the Good Friday Agreement’s mechanism for a border poll on Irish unity, but demographic change and the same disillusionment with Westminster have made that mechanism feel closer to activation than at any point since the peace agreement was signed.
Adding urgency to all of this is the rise of Reform UK, whose prospects at a future general election worry nationalist politicians in each of the three nations for overlapping reasons. A government built around a harder line on immigration and a more centralising instinct is, paradoxically, one of the most effective recruiting arguments the independence movements have. Several nationalist leaders have suggested privately that a Reform-led or Reform-influenced government in London would make the case for leaving the union almost automatically, without further argument.
The consequences of any real move toward breakup would be considerable and are not fully mapped by anyone involved. An independent Scotland would need to resolve its currency question, its relationship with the European Union, and the future of the Trident nuclear deterrent currently based on the Clyde. A Wales seeking independence would face sharper questions about fiscal viability, given its reliance on transfers from the UK Treasury. A united Ireland would require the Irish state to absorb a substantial subvention currently paid by London to Belfast, alongside the delicate task of integrating two very different healthcare, education and policing systems. England, left as the residual UK, would face its own reckoning over identity, institutions and a shrunken position on the world stage.
None of this is imminent. Westminster retains the legal authority to block a binding independence referendum in Scotland, and there is no sign of any UK government, Labour or otherwise, agreeing to one soon. Wales remains the least enthusiastic of the three nations, with support for independence still well below a majority. Northern Ireland’s demographic trends point toward a border poll becoming likely within the next decade rather than the next year. Yet the direction of travel is now unmistakable, and the fact that three governments are beginning to talk to each other about it, rather than simply talking about themselves, marks a genuine change in how the endgame of the United Kingdom might unfold. Westminster’s habit of treating each nation’s grievances as a separate, manageable problem may not survive contact with three capitals that have started comparing answers.
