UK parliamentary by-elections since 1945
This list notes the number of by-elections by session since 1945-46 and also lists the successful candidate in by-elections since 2005.
MPs' parliamentary activities: An interactive dashboard
Filter by constituency to explore MPs' parliamentary activities, including the debates and urgent questions they raise, and how they vote in divisions.
Elections data
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
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Constituency data: electorates
Constituency-level data on electorates in the UK, including data for both the parliamentary and the local government franchise
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2021 Local Elections Handbook and dataset
Explore the 2021 local election results handbook and download a comprehensive results dataset for English electoral districts and wards.
Government data
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
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Attendance of the Prime Minister at Prime Minister’s Questions (PMQs) since 1979
This list notes the number of Prime Minister's Questions (PMQs) attended by Prime Ministers since 1979.
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Regional Cabinet meetings of the UK Government
This list notes Cabinet meetings held away from Downing Street. Regional Cabinet meetings were introduced by Gordon Brown in 2008 and continued under David Cameron's Coalition Government. Theresa May held two regional Cabinet meeting in 2017 and 2018, and Boris Johnson in 2020 and 2022. Prior to 2008, Cabinet meetings outside London were extremely rare.
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Ministers in the Conservative Governments: 2015, 2017 and 2019 Parliaments
This list notes ministerial office holders since the 2015 General Election.
MP data
Find quick-read articles, datasets and longer briefings on the makeup of the UK Parliament and the characteristics of MPs
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Chairs of Commons select committees since 2010
House of Commons select committee chairs in the 2019, 2017, 2015 and 2010 parliaments.
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MPs who have withdrawn from the Commons Chamber or who have been suspended
This list notes MPs who have left the Chamber voluntarily, been asked to withdraw, or who have been suspended.
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MPs’ changes of party allegiance in the House of Commons since 1979
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.
Parliamentary data
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
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Recall of Parliament
This briefing paper discusses the procedure for recalling Parliament, as well as providing details of recent occasions when Parliament has been recalled.
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Attendance of the Prime Minister at Prime Minister’s Questions (PMQs) since 1979
This list notes the number of Prime Minister's Questions (PMQs) attended by Prime Ministers since 1979.
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Maiden Speeches in the House of Commons since 1918
Maiden speeches by newly elected MPs since 1918
