# UK Devolution Explained: How Power Is Shared Across Britain > Scotland, Wales, and Northern Ireland have their own parliaments with real powers — but Westminster can still overrule them. Here's how devolution works and why it's politically fragile. *Section: Politics — By Jordan Pike (Political Correspondent) — Published June 25, 2026 — 9 min read* Canonical URL: https://dailyjunction.org/politics/uk-devolution-explained-2026 Tags: devolution, Scotland, Wales, Northern Ireland, UK constitution, Westminster, Holyrood, Senedd ## Key takeaways - Devolution transferred powers over health, education, transport, and other areas to Scotland, Wales, and Northern Ireland from 1999 onwards - The Scottish Parliament has the most extensive powers, including limited tax-raising ability and control over justice and policing - Westminster retains control over 'reserved matters' including defence, foreign policy, immigration, and most taxation - Devolution is not federalism — the UK Parliament could theoretically abolish the devolved legislatures, though this would be politically explosive - The Sewel Convention says Westminster will not normally legislate on devolved matters without consent, but this is not legally binding The United Kingdom is not as united as its name suggests. Since 1999, Scotland, Wales, and Northern Ireland have had their own parliaments or assemblies with the power to pass laws on health, education, transport, and other major policy areas. England, by contrast, is governed directly by Westminster. This patchwork arrangement is called **devolution**, and it has reshaped British politics, creating new centres of power, new tensions, and new questions about what it means to be a union. Here is how devolution works, what powers have been transferred, and why the system is politically fragile. ## What Devolution Is **Devolution** is the transfer of powers from the UK Parliament at Westminster to elected bodies in Scotland, Wales, and Northern Ireland. It is not the same as **federalism**, where power is constitutionally divided between national and regional governments. In the UK, Westminster remains **sovereign** — it could, in theory, take back the powers it has devolved or even abolish the devolved legislatures altogether. In practice, this would be politically explosive, and a convention has emerged that Westminster will not normally legislate on devolved matters without the consent of the relevant parliament. But the legal reality is clear: devolution is a gift from Westminster, not a constitutional right. ## The Three Devolved Legislatures ### Scotland: The Scottish Parliament (Holyrood) The **Scottish Parliament**, based in Edinburgh and known as Holyrood, was established in 1999 following a referendum in 1997 in which 74% of Scots voted in favour. It has **129 Members of the Scottish Parliament (MSPs)**, elected using a proportional representation system (the Additional Member System). Scotland has the most extensive devolved powers of the three nations. The Scottish Parliament can legislate on: - Health (including the NHS in Scotland) - Education and universities - Justice and policing - Transport - Environment and agriculture - Local government - Housing - Some aspects of taxation (including the power to vary income tax rates) The Scotland Act 2016 gave Holyrood significant new tax powers, including control over income tax rates and bands (though not the personal allowance), and half of VAT revenues raised in Scotland. This makes the Scottish Parliament more financially accountable than the other devolved bodies. **Reserved matters** — areas where Westminster retains control — include defence, foreign policy, immigration, most social security, broadcasting, and the constitution (including the power to hold independence referendums). The Scottish Government, led by the **First Minister**, is formed by the party or coalition with the most seats in Holyrood. As of 2026, the Scottish National Party (SNP) leads the government, though it has lost its overall majority and governs with support from other parties. ### Wales: The Senedd (Welsh Parliament) The **Senedd Cymru** (Welsh Parliament), formerly known as the National Assembly for Wales, was also established in 1999, following a much narrower referendum in 1997 (50.3% in favour). It has **60 Members of the Senedd (MSs)**, elected using the same proportional system as Scotland. Wales initially had much weaker powers than Scotland, but these have grown over time. The Government of Wales Act 2006 and the Wales Act 2017 expanded the Senedd's legislative competence. It can now legislate on: - Health (the NHS in Wales) - Education - Transport - Environment and agriculture - Local government - Housing - Some aspects of taxation (including the power to vary income tax by up to 10p in the pound, and control over land transaction tax and landfill tax) Reserved matters include defence, foreign policy, immigration, policing, justice, and broadcasting. Notably, **policing and justice** are devolved in Scotland and Northern Ireland but not in Wales, reflecting the different political settlements. The **First Minister of Wales** leads the Welsh Government. As of 2026, Labour holds power in Cardiff, as it has for most of the Senedd's existence. ### Northern Ireland: The Northern Ireland Assembly (Stormont) The **Northern Ireland Assembly**, based at Stormont in Belfast, was established in 1998 as part of the Good Friday Agreement, the peace deal that ended the Troubles. It has **90 Members of the Legislative Assembly (MLAs)**, elected using the Single Transferable Vote (a proportional system). Northern Ireland's devolution settlement is unique because it is designed to ensure power-sharing between unionist and nationalist communities. The **First Minister** and **deputy First Minister** are equal partners, and both must be in post for the Executive to function. Key decisions require cross-community support, preventing one side from dominating. The Assembly can legislate on: - Health - Education - Justice and policing (devolved in 2010) - Transport - Environment and agriculture - Economic development Reserved matters include defence, foreign policy, immigration, taxation (except for a limited power over corporation tax), and national security. Stormont has been suspended several times due to political deadlock, most recently from 2017 to 2020 and again in 2022–2024. When the Assembly is not sitting, Northern Ireland is governed directly from Westminster. ## Reserved vs. Devolved Powers The devolution settlements are based on **reserved powers** models (in Scotland and Wales) or a mix of reserved and excepted powers (in Northern Ireland). Westminster retains control over: - **Defence and national security** - **Foreign policy and international relations** - **Immigration and nationality** - **Most taxation** (though Scotland and Wales have limited tax powers) - **Social security** (mostly reserved, though Scotland has some powers) - **Broadcasting and telecommunications** - **The constitution** (including the power to hold referendums on independence) Everything else is, in principle, devolved — though the boundaries are often contested. ## The Sewel Convention The **Sewel Convention**, named after Lord Sewel who articulated it in 1998, states that Westminster will **not normally legislate** on devolved matters without the consent of the relevant devolved legislature. This consent is given through a **Legislative Consent Motion (LCM)**, sometimes called a Sewel Motion. The convention is politically important but **not legally binding**. The UK Supreme Court confirmed in the 2017 Article 50 case (Miller I) that the Sewel Convention is a political rule, not a legal one, and Westminster retains the sovereign power to legislate on any matter, devolved or not. This became contentious during Brexit. The UK government passed laws affecting devolved areas (such as agriculture and fisheries) without the consent of the Scottish Parliament or the Senedd, arguing that Brexit was a reserved matter. The devolved governments argued this breached the spirit of devolution, though the courts upheld Westminster's legal right to do so. ## The West Lothian Question Devolution has created an asymmetry: Scottish, Welsh, and Northern Irish MPs at Westminster can vote on English-only matters (such as health and education in England), but English MPs cannot vote on the same matters in Scotland, Wales, or Northern Ireland, because those are devolved. This is known as the **West Lothian Question**, named after Tam Dalyell, the MP for West Lothian, who raised it in the 1970s. It has become more politically charged as devolution has deepened. In 2015, the Conservative government introduced **English Votes for English Laws (EVEL)**, a procedural change that gave English MPs a veto over legislation affecting only England. The system was complex, rarely used, and was abolished in 2021 by Boris Johnson's government, which argued it was unnecessary and created a two-tier Commons. The question remains unresolved. Some argue England should have its own parliament; others say regional devolution within England is the answer. Neither has gained political traction. ## Devolution and the Union Devolution was intended to strengthen the UK by giving Scotland, Wales, and Northern Ireland a greater say in their own affairs, reducing the appeal of independence. The results have been mixed. In **Scotland**, devolution has not killed off the independence movement. The SNP has dominated Scottish politics since 2007, and Scotland held an independence referendum in 2014 (which the pro-union side won 55%–45%). The SNP continues to push for a second referendum, though the UK government has refused to grant the necessary powers. In **Wales**, support for independence has grown in recent years, though it remains a minority position. Devolution has bedded in, and there is little appetite to reverse it. In **Northern Ireland**, devolution is tied to the peace process and the delicate balance between unionist and nationalist communities. Brexit has destabilised this balance, with disputes over the Northern Ireland Protocol and the Irish Sea border straining the devolution settlement. ## Funding: The Barnett Formula The devolved governments are funded by **block grants** from the UK Treasury, calculated using the **Barnett Formula**. This formula adjusts the grant based on changes in spending on comparable services in England. If England's health budget increases by £1 billion, Scotland, Wales, and Northern Ireland receive a proportional increase based on their population. The formula is widely criticised as outdated and unfair, but it has survived because changing it would create political winners and losers, and no government wants that fight. Scotland and Northern Ireland receive more per head than England, while Wales receives slightly less. Scotland and Wales now have limited tax-raising powers, which gives them more financial autonomy but also more accountability. If they raise taxes, they cannot blame Westminster for the consequences. ## The Future of Devolution Devolution is a work in progress. The settlements are asymmetric, contested, and politically fragile. Key tensions include: - **Scottish independence** — The SNP's push for a second referendum remains the biggest threat to the union. - **Brexit** — The UK's departure from the EU has shifted powers back to Westminster in areas like agriculture and fisheries, which the devolved governments see as a power grab. - **England** — The lack of English devolution creates resentment and the unresolved West Lothian Question. - **Funding** — The Barnett Formula is a source of constant friction. Some argue the UK should move towards a **federal system**, with a written constitution and clear divisions of power. Others say devolution has gone too far and should be rolled back. Neither is likely. Devolution is here to stay, but its future shape is uncertain. ## The Bottom Line Devolution transferred powers over health, education, transport, and other areas to Scotland, Wales, and Northern Ireland from 1999 onwards, creating new parliaments with real legislative authority. The Scottish Parliament has the most extensive powers, including limited tax-raising ability, while Wales and Northern Ireland have more constrained settlements. Westminster retains control over reserved matters including defence, foreign policy, immigration, and most taxation, and could theoretically abolish the devolved legislatures, though this would be politically explosive. The Sewel Convention says Westminster will not normally legislate on devolved matters without consent, but this is not legally binding, as Brexit demonstrated. Devolution has reshaped British politics, creating new centres of power and new tensions, and the future of the union remains uncertain. ## Frequently asked questions ### What is the difference between devolution and independence? Devolution transfers some powers to regional parliaments while keeping the UK together. Independence would mean Scotland, Wales, or Northern Ireland leaving the UK entirely and becoming separate sovereign states. Devolution is a halfway house. ### Can Westminster overrule the Scottish Parliament? Yes. The UK Parliament is sovereign and could in theory abolish Holyrood or pass laws that override it. In practice, this would be politically explosive and is constrained by the Sewel Convention, which says Westminster will not normally legislate on devolved matters without consent. ### Why doesn't England have its own parliament? England is governed directly by the UK Parliament at Westminster. The 'West Lothian Question' asks why Scottish, Welsh, and Northern Irish MPs can vote on English-only matters when English MPs cannot vote on devolved matters. Attempts to create an English parliament or English votes for English laws have been politically contentious and largely abandoned. ## Sources - [GOV.UK — Devolution guidance](https://www.gov.uk/guidance/devolution-settlement-england) - [Institute for Government — Devolution](https://www.instituteforgovernment.org.uk/explainer/devolution) - [Scottish Parliament — Powers of the Parliament](https://www.parliament.scot/) - [Senedd Cymru — Welsh Parliament powers](https://senedd.wales/) --- Daily Junction — https://dailyjunction.org/politics/uk-devolution-explained-2026