Politics in Wales forms a distinctive polity in the wider politics of the United Kingdom, with Wales as one of the four constituent countries of the United Kingdom (UK).
Constitutionally, the United Kingdom is a unitary state with one sovereign parliament delegating power to the devolved national parliaments, with some executive powers divided between governments. Under a system of devolution adopted in the late 1990s three of the four countries of the United Kingdom, Wales, Scotland and Northern Ireland, voted for limited self-government, subject to the ability of the UK Parliament in Westminster, nominally at will, to amend, change, broaden or abolish the national governmental systems. As such, the Senedd (Welsh Parliament; Senedd Cymru) is not de jure sovereign. Since then, further Welsh devolution has granted the Senedd additional powers.
Executive power in the United Kingdom is vested in the King-in-Council, while legislative power is vested in the King-in-Parliament (the Crown and the Parliament of the United Kingdom at Westminster in London). The Government of Wales Act 1998 established devolution in Wales, and certain executive and legislative powers have been constitutionally delegated to the Welsh Parliament. The scope of these powers was further widened by the Government of Wales Act 2006.
Government of Northern Ireland Government of Scotland and Governance of England
Since 1999 most areas of domestic policy have been decided within Wales via the Senedd and the Welsh Government.
Judicially, Wales remains within the jurisdiction of England and Wales. In 2007, the National Assembly for Wales (renamed as the Senedd from May 2020) gained the power to enact Wales-specific Measures. Following the 2011 Welsh devolution referendum, the National Assembly was given the power to create Acts.
Wales, together with Cheshire, used to come under the jurisdiction of the Court of Great Session, and therefore was not within the English circuit court system.