Devolution: Scotland, Wales, and Northern Ireland

Devolution is the transfer of powers from a central government to regional or national bodies while retaining ultimate sovereignty at the centre. In the UK, devolution has been one of the most transformative constitutional developments since 1997, fundamentally altering the relationship between Westminster and the nations of Scotland, Wales, and Northern Ireland.

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What Is Devolution?

Devolution should be distinguished from related concepts:

Concept	Definition
Devolution	Power is delegated from the centre; the centre retains sovereignty and can (in theory) take the power back
Federalism	Power is constitutionally divided between levels; neither can abolish the other
Decentralisation	Administrative tasks are delegated to regional offices (not the same as transferring legislative power)
Unitary state	All sovereignty lies with the central government

The UK remains legally a unitary state because Westminster retains parliamentary sovereignty. However, devolution has created a system that, in practice, resembles federalism in many respects.

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Devolution to Scotland

The Scottish Parliament (Holyrood)

• Established by the Scotland Act 1998 following a referendum in 1997 (74.3% voted for a Scottish Parliament; 63.5% voted for it to have tax-varying powers).
• First elections held in 1999 using the Additional Member System (AMS).
• Originally 129 MSPs.

Powers of the Scottish Parliament:

• Education, health, law and order, local government, environment, housing, agriculture, some transport and taxation.
• The Scotland Act 2012 devolved stamp duty and landfill tax and gave the Scottish Parliament the power to set a Scottish rate of income tax.
• The Scotland Act 2016 (following the Smith Commission after the 2014 independence referendum) gave further powers over income tax rates and bands, some welfare powers, and the Crown Estate in Scotland.

Reserved matters (retained by Westminster): Defence, foreign affairs, immigration, the constitution, most taxation, social security (mostly), broadcasting.

The 2014 Independence Referendum

In September 2014, Scotland held an independence referendum. The result was 55.3% No to 44.7% Yes. In the campaign, the three main UK party leaders made a joint "Vow" to deliver further devolution in the event of a No vote, leading to the Smith Commission and the Scotland Act 2016.

The SNP's continued dominance of Scottish politics (governing 2007–2024) kept the question of independence on the agenda. The SNP argued that Brexit — which Scotland voted against by 62% to 38% — constituted a material change in circumstances justifying a second referendum (indyref2). The UK Supreme Court ruled in November 2022 that the Scottish Parliament could not legislate for a second referendum without Westminster's consent.

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Devolution to Wales

Senedd Cymru (Welsh Parliament)

• Established by the Government of Wales Act 1998 following a very narrow referendum in 1997 (50.3% Yes).
• Initially had only secondary legislative powers (the power to make regulations within the framework of Westminster Acts).
• The Government of Wales Act 2006 introduced a system where the Senedd could gain primary legislative powers in specific areas through Legislative Competence Orders (LCOs), subject to Westminster approval.
• A 2011 referendum (63.5% Yes) gave the Senedd full primary legislative powers in its devolved areas, removing the need for LCO approval.
• The Wales Act 2017 moved Wales to a reserved powers model (like Scotland), listing the matters reserved to Westminster rather than those devolved. This gave Wales greater clarity and, in effect, broader competence.

Key devolved areas: Health, education, local government, the Welsh language, environment, housing, agriculture, transport (partially).

Key differences from Scotland:

• Wales has fewer powers than Scotland (e.g. limited tax powers, no separate legal jurisdiction until recent reforms).
• Welsh devolution has been more incremental and contested.
• Support for Welsh independence is lower than support for Scottish independence, though it has grown (polls suggest 20–30% support as of the mid-2020s).

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Devolution to Northern Ireland

The Northern Ireland Assembly (Stormont)