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.
Leaders in the House of Commons
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.
Leads the party in the House of Commons. The leader of the Scottish National Party (SNP), John Swinney has been a Member of the Scottish Parliament (MSP) since 1999.
In accordance with the party's policy of abstentionism, no elected Sinn Féin members of parliament have ever sat in the House of Commons.
Leads the party in the House of Commons. The Green Party's leader, Zack Polanski, has sat as a member of the London Assembly since 2021.
Leads the party in the House of Commons. Plaid Cymru's leader, Rhun ap Iorwerth, has sat as a member of the Senedd (Welsh Parliament) for Ynys Môn since 2 August 2013.
Leaders in the House of Lords
Leaders in the Scottish Parliament
Leaders in the Senedd
Leaders in the Northern Ireland Assembly
The leader of the Democratic Unionist Party (DUP), Gavin Robinson has sat in the House of Commons as MP for Belfast East since 2015.
The leader of the Traditional Unionist Voice (TUV), Jim Allister was previously a North Antrim MLA until his election to the House of Commons in 2024 as MP for North Antrim.
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