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This article lists the Leaders of political parties in the United Kingdom to provide insight into the politics of the United Kingdom. It contains details including which party the leader belongs to, the leader's seat, and which form of leadership that person holds.
National party leaders are usually members of parliament. Some (including Welsh, Scottish and Northern Irish parties) designate a separate leader in the House of Commons, or their leader is absent from the House of Commons and holds membership of a devolved body.
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| Keir Starmer Leader of the Labour Party | Rishi Sunak Leader of the Conservative Party |
|---|
| Leader | Party | Leader's seat | Number of seats [1] | Leader since | |
|---|---|---|---|---|---|
| Keir Starmer | Labour Party | Holborn and St Pancras | 411 | 4 April 2020 | |
| Rishi Sunak | Conservative Party | Richmond (Yorks) | 121 | 24 October 2022 | |
| Ed Davey | Liberal Democrats | Kingston and Surbiton | 72 | 27 August 2020 | |
| Stephen Flynn [a] | Scottish National Party | Aberdeen South | 9 | 6 December 2022 [2] | |
| N/A [c] | Sinn Féin | N/A | 7 [c] | ||
| Nigel Farage | Reform UK | Clacton | 5 | 3 June 2024 | |
| Gavin Robinson [b] | Democratic Unionist Party | Belfast East | 5 | 29 March 2024 [3] | |
| Carla Denyer and Adrian Ramsay | Green Party of England and Wales | Bristol Central (Carla Denyer) Waveney Valley (Adrian Ramsay) | 4 | 1 October 2021 | |
| Liz Saville Roberts [d] | Plaid Cymru | Dwyfor Meirionnydd | 4 | 14 June 2017 [4] | |
| Colum Eastwood | Social Democratic and Labour Party | Foyle | 2 | 14 November 2015 | |
| Sorcha Eastwood | Alliance Party of Northern Ireland | Lagan Valley | 1 | 4 July 2024 | |
| Robin Swann | Ulster Unionist Party | South Antrim | 1 | 4 July 2024 | |
| Jim Allister | Traditional Unionist Voice | North Antrim | 1 | 4 July 2024 | |
| Leader | Party | Members [5] | Leader since | |
|---|---|---|---|---|
| Nicholas True, Baron True | Conservative Party | 277 | 14 July 2016 | |
| Baroness Smith of Basildon [6] | Labour Party | 172 | 27 May 2015 | |
| Lord Newby [7] | Liberal Democrats | 79 | 13 September 2016 | |
| Leader | Party | Leader's seat | Number of seats | Leader since | |
|---|---|---|---|---|---|
| John Swinney | Scottish National Party | Perthshire North | 64 | 8 May 2024 | |
| Douglas Ross | Scottish Conservatives | Moray (as an MP) | 31 | 5 August 2020 | |
| Anas Sarwar | Scottish Labour | Glasgow (region) | 22 | 27 February 2021 | |
| Patrick Harvie | Scottish Greens | Glasgow (region) | 7 | 22 September 2008 | |
| Lorna Slater | Lothian (region) | 1 August 2019 | |||
| Alex Cole-Hamilton | Scottish Liberal Democrats | Edinburgh Western | 4 | 20 August 2021 | |
| Leader | Party | Leader's seat | Number of seats | Leader since | |
|---|---|---|---|---|---|
| Eluned Morgan | Welsh Labour | Mid and West Wales (region) | 30 | 24 July 2024 | |
| Andrew RT Davies | Welsh Conservatives | South Wales Central (region) | 16 | 24 January 2021 | |
| Rhun ap Iorwerth | Plaid Cymru – Party of Wales | Ynys Môn | 13 | 16 June 2023 | |
| Jane Dodds | Welsh Liberal Democrats | Mid and West Wales (region) | 1 | 3 November 2017 | |
| Leader | Party | Leader's seat | Number of seats | Leader since | |
|---|---|---|---|---|---|
| Michelle O'Neill | Sinn Féin | Mid Ulster | 27 | 23 January 2017 | |
| N/A [f] | Democratic Unionist Party | Belfast East (as an MP) | 25 | 1 May 1997 | |
| Naomi Long | Alliance Party of Northern Ireland | Belfast East | 17 | October 2016 | |
| Doug Beattie | Ulster Unionist Party | Upper Bann | 9 | 17 May 2021 | |
| N/A [g] | Social Democratic and Labour Party | Foyle (as an MP) | 8 | 12 December 2019 | |
| Jim Allister | Traditional Unionist Voice | North Antrim | 1 | 7 December 2007 | |
| Collective leadership | People Before Profit | N/A | 1 | N/A | |
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