Welsh independence

Welsh independence (Welsh: Annibyniaeth i Gymru) is a political movement advocating for Wales to become a sovereign state, independent from the United Kingdom.

Wales was conquered during the 13th century by Edward I of England following the killing of Llywelyn the Last, Prince of Wales. Edward introduced the royal ordinance, the Statute of Rhuddlan, in 1284, introducing English common law alongside Welsh law and custom and causing the recently established Welsh principality to be incorporated into the Kingdom of England. Owain Glyndŵr restored Welsh independence c. 1400–15, but Henry IV of England put down the revolt. Henry VIII of England introduced the Laws in Wales Acts between 1535 and 1542, English law replaced Cyfraith Hywel (Welsh medieval law), and the Welsh principality and Marches were integrated into England. and Wales gained representation in parliament and a new equality under the law. The Wales and Berwick Act defined "England" to include Wales in 1746, but the Welsh Language Act 1967, partly repealed this with the term "England and Wales".

The modern Welsh independence movement emerged during the mid-19th century, as did a movement for "home rule". Since 1999, Wales has been granted some legislative power as part of Welsh devolution from the UK parliament, and contemporary Welsh law within the English legal system. At present, the political parties Plaid Cymru, Propel, Gwlad, and the Wales Green Party support Welsh independence, as does the non-partisan YesCymru campaign group.

Opinion polls on Welsh independence show more opposition in Wales to independence than support.