This timeline details Leaders of Plaid Cymru
See also: Leaders of the Conservative Party UK
Leaders of the Labour Party UK
Government Leader
Leaders of Plaid Cymru 1925 – Present
Leaders of the Scottish National Party (SNP) 1934 – Present
This timeline details Leaders of the Scottish National Party
See also: Leaders of the Conservative Party UK
Leaders of the Labour Party UK
Leaders of the Liberal Democrats UK 1988 – Present
This timeline details Leaders of the Liberal Democrats
See also: Leaders of the Conservative Party UK
Leaders of the Labour Party UK
Leaders of the Conservative Party (UK) 1834 – Present
This timeline details Leaders of the Conservative Party (UK)
See also: Leaders of the Labour Party UK
Leaders of the Liberal Democrats UK
Leaders of the Labour Party (UK) 1906 – Present
This timeline details Leaders of the Labour Party (UK) 1906 – Present
See also: Leaders of the Conservative Party UK
Leaders of the Liberal Democrats UK
