Explore and download data about Parliament, MPs, elections and the Government. Use our data freely and flexibly under the conditions of the Open Parliament Licence.
Filter by constituency to explore MPs' parliamentary activities, including the debates and urgent questions they raise, and how they vote in divisions.
Access briefings and original datasets covering UK Parliament elections from 1918, including by-elections from 1945. Find data by constituency as well as original analysis of election results
This Commons Library briefing paper presents an overview of UK election results since 1918. It provides summary results for all elections from 1918 to 2022, giving more extensive details about UK general elections. It also includes elections to the European Parliament, devolved legislatures and local government.
This list notes the number of by-elections by session since 1945-46 and also lists the successful candidate in by-elections since 2005.
Constituency-level data on electorates in the UK, including data for both the parliamentary and the local government franchise
Read the latest data about the activity of members of the government in Parliament. Here, you can access a range of facts and figures in various formats about the government
This list notes ministerial office holders since the 2015 General Election.
This note lists the Prime Ministers that have served in the United Kingdom, since 1721. It also provides information on changes of Prime Ministers between elections since 1900.
This list notes the number of Prime Minister's Questions (PMQs) attended by Prime Ministers since 1979.
Find quick-read articles, datasets and longer briefings on the makeup of the UK Parliament and the characteristics of MPs
This list identifies all the women who have ever been elected to the House of Commons. They are reported election by election, then in the order in which they were sworn in, when more than one MP was elected on the same day.
This list notes when a Member has changed allegiance from one political party to another or decided to sit as an independent MP. Instances of Members losing or resigning a party whip are also noted.
This list notes MPs who have left the Chamber voluntarily, been asked to withdraw, or who have been suspended.
Find facts and figures relating to legislation, MPs, ministers, select committees, debates, divisions and parliamentary procedure. Some lists date back hundreds of years to the present day but many cover the last seven to ten Parliaments
This list notes ministerial office holders since the 2015 General Election.
Urgent questions are a category of oral questions that allow all MPs not in the Government to put a question to a minister without the usual notice required for oral question time and without the need to be drawn in a ballot.
This briefing paper discusses the procedure for recalling Parliament, as well as providing details of recent occasions when Parliament has been recalled.
