During a British House of Commons debate, Labour MP Tam Dalyell poses what would become known as the West Lothian question, referring to issues related to devolution in the United Kingdom.

The House of Commons is the lower house of the Parliament of the United Kingdom. Like the upper house, the House of Lords, it meets in the Palace of Westminster in London, England. The House of Commons is an elected body consisting of 650 members known as members of Parliament (MPs), who are elected to represent constituencies by the first-past-the-post system and hold their seats until Parliament is dissolved.

The Labour Party, often referred to as Labour, is a political party in the United Kingdom that sits on the centre-left of the political spectrum. The party has been described as an alliance of social democrats, democratic socialists and trade unionists. It is one of the two dominant political parties in the United Kingdom; the other being the Conservative Party. Labour has been led by Keir Starmer since 2020, who became Prime Minister of the United Kingdom following the 2024 general election. To date, there have been 12 Labour governments and seven different Labour Prime Ministers – MacDonald, Attlee, Wilson, Callaghan, Blair, Brown and Starmer.

Sir Thomas Dalyell, 11th Baronet, known as Tam Dalyell, was a Scottish politician who served as Member of Parliament (MP) for Linlithgow from 1962 to 2005. A member of the Labour Party, he was best known for formulating what came to be known as the "West Lothian question", on whether non-English MPs should be able to vote upon English-only matters after political devolution. He was also known for his extreme anti-war views, opposing the Falklands War, the Gulf War, the War in Afghanistan and the Iraq War.

The West Lothian question, also known as the English question, is a political issue in the United Kingdom. It concerns the question of whether members of Parliament (MPs) from Northern Ireland, Scotland and Wales who sit in the House of Commons should be able to vote on matters that affect only England, while neither they nor MPs from England are able to vote on matters that have been devolved to the Northern Ireland Assembly, the Scottish Parliament and the Senedd. The term West Lothian question was coined by Enoch Powell MP in 1977 after Tam Dalyell, the Labour MP for the Scottish constituency of West Lothian, raised the matter repeatedly in House of Commons debates on devolution.