Prime Ministers of the United Kingdom

List of Prime Ministers of the United Kingdom till now

Prime Ministers of the United Kingdom of 18th Century

The present system began in 1688 with the start of the process to remove decision making from King Charles I and II known as the English Civil War, with our first Prime Minister, Sir Robert Walpole, elected in 1721.

Name of Prime MinistersEntered OfficeLeft OfficeParty
Sir Robert Walpole
(from 1742 as Earl of Orford)
4 April 172111 February 1742Whig
The Earl of Wilmington16 February 17422 July 1743Whig
Henry Pelham27 August 17436 March 1754Whig
The Duke of Newcastle
(1st term)
16 March 175416 November 1756Whig
The Duke of Devonshire16 November 175625 June 1757Whig
Duke of Newcastle-upon-Tyne
(2nd term)
2 July 175726 May 1762Whig
The Earl of Bute26 May 176216 April 1763Tory
George Grenville16 April 176313 July 1765Whig
The Marquess of Rockingham
(1st term)
13 July 176530 July 1766Whig
The Earl of Chatham, “William Pitt the Elder”30 July 176614 October 1768Whig
The Duke of Grafton14 October 176828 January 1770Whig
Lord North28 January 177022 March 1782Tory
The Marquess of Rockingham
(2nd term)
27 March 17821 July 1782Whig
The Earl of Shelburne4 July 17822 April 1783Whig
The Duke of Portland
(1st term)
2 April 178319 December 1783Whig
William Pitt the Younger
(1st term)
19 December 178314 March 1801Tory

Prime Ministers of the United Kingdom of 19th century

Prime Ministers during the 19th century were Prime Minister of England, Wales, Scotland and Ireland, following the Act of Union 1800 (which merged the Kingdom of Ireland with the Kingdom of Great Britain, forming the United Kingdom of Great Britain and Ireland, as of 1 January 1801).

Name of Prime MinistersEntered OfficeLeft OfficeParty
Henry Addington17 March 180110 May 1804Tory
William Pitt the Younger
(2nd term)
10 May 180423 January 1806Tory
The Lord Grenville11 February 180631 March 1807Whig
The Duke of Portland
(2nd term)
31 March 18074 October 1809Tory
Spencer Perceval4 October 180911 May 1812Tory
The Earl of Liverpool8 June 18129 April 1827Tory
George Canning10 April 18278 August 1827Tory
The Viscount Goderich31 August 182721 January 1828Tory
The Duke of Wellington
(1st term)
22 January 182816 November 1830Tory
The Earl Grey22 November 18309 July 1834Whig
The Viscount Melbourne
(1st term)
16 July 183414 November 1834Whig
The Duke of Wellington
(2nd term)
14 November 183410 December 1834Tory
Sir Robert Peel
(1st term)
10 December 18348 April 1835Conservative
The Viscount Melbourne
(2nd term)
18 April 183530 August 1841Whig
Sir Robert Peel
(2nd term)
30 August 184129 June 1846Conservative
The Lord John Russell
(1st term)
(afterward PM as Earl Russell)
30 June 184621 February 1852Whig
The Earl of Derby
(1st term)
23 February 185217 December 1852Conservative
The Earl of Aberdeen19 December 185230 January 1855Peelite
The Viscount Palmerston
(1st term)
6 February 185519 February 1858Whig
The Earl of Derby
(2nd term)
20 February 185811 June 1859Conservative
The Viscount Palmerston
(2nd term)
12 June 185918 October 1865Liberal
The Earl Russell
(2nd term)
(previously PM as Lord John Russell)
29 October 186526 June 1866Liberal
The Earl of Derby
(3rd term)
28 June 186625 February 1868Conservative
Benjamin Disraeli
(1st term)
27 February 18681 December 1868Conservative
William Ewart Gladstone
(1st term)
3 December 186817 February 1874Liberal
Benjamin Disraeli
(2nd term)
(from 1876 as Earl of Beaconsfield)
20 February 187421 April 1880Conservative
William Ewart Gladstone
(2nd term)
23 April 18809 June 1885Liberal
The Marquess of Salisbury
(1st term)
23 June 188528 January 1886Conservative
William Ewart Gladstone
(3rd term)
1 February 188620 July 1886Liberal
The Marquess of Salisbury
(2nd term)
25 July 188611 August 1892Conservative
William Ewart Gladstone
(4th term)
15 August 18922 March 1894Liberal
The Earl of Rosebery5 March 189422 June 1895Liberal
The Marquess of Salisbury
(3rd term)
25 June 189511 July 1902Conservative

Prime Ministers of the United Kingdom of 20th century

There was no change in the jurisdiction of the Parliament of the United Kingdom (and hence the area the Prime Minister was Prime Minister of) until 1922, when following the Anglo-Irish War, 26 counties in Ireland seceded from the United Kingdom, forming the Irish Free State. The other 6 counties, in the northeast of Ireland, remained in the Union, becoming Northern Ireland. The official name of the United Kingdom became the United Kingdom of Great Britain and Northern Ireland.

Name of Prime MinistersEntered OfficeLeft OfficeParty
Arthur Balfour11 July 19025 December 1905Conservative
Sir Henry Campbell-Bannerman5 December 19053 April 1908Liberal
H. H. Asquith5 April 19085 December 1916Liberal
David Lloyd George6 December 191619 October 1922Liberal
Andrew Bonar Law23 October 192220 May 1923Conservative
Stanley Baldwin
(1st term)
23 May 192316 January 1924Conservative
Ramsay MacDonald
(1st term)
22 January 19244 November 1924Labour
Stanley Baldwin
(2nd term)
4 November 19245 June 1929Conservative
Ramsay MacDonald
(2nd term)
5 June 192924 August 1931Labour
Ramsay MacDonald
(3rd term)
24 August 19317 June 1935National Labour
Stanley Baldwin
(3rd term)
7 June 193528 May 1937Conservative
Neville Chamberlain28 May 193710 May 1940Conservative
Winston Churchill
(1st term)
10 May 194027 July 1945Conservative
Clement Attlee27 July 194526 October 1951Labour
Winston Churchill
(2nd term)
26 October 19517 April 1955Conservative
Sir Anthony Eden7 April 19559 January 1957Conservative
Harold Macmillan11 January 195719 October 1963Conservative
The Earl of Home
(from 1963 as Sir Alec Douglas-Home)
19 October 196316 October 1964Conservative
Harold Wilson
(1st term)
16 October 196419 June 1970Labour
Edward Heath19 June 19704 March 1974Conservative
Harold Wilson
(2nd term)
4 March 19745 April 1976Labour
James Callaghan5 April 19764 May 1979Labour
Margaret Thatcher4 May 197928 November 1990Conservative
John Major28 November 19902 May 1997Conservative
Tony Blair2 May 1997incumbentLabour

Prime Ministers of the United Kingdom of 21st Century

Prime MinistersEntered OfficeLeft OfficeParty
Tony Blair2 May 199727 June 2007Labour
Gordon Brown27 June 200711 May 2010Labour
David Cameron11 May 201013 July 2016Conservative
Theresa May13 July 201624 July 2019Conservative
Boris Johnson24 July 2019incumbentConservative
Updated: 27/08/2021

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