Prìomh Mhinistearan na Rìoghachd Aonaichte

Priomh-mhinisteirean ann am Breatainn

Clar:	Cuigse	Toraidh neo Conservative	Partaidh na Toraidhean (RA)	Libearalach	Labarach	Riaghaltas Naiseanta	Co-bhann

Priomh-mhinisteir	Thoisich	Dh’fhag	Partaidh
Sir Robert Walpole (from 1742 as Earl of Orford)	4 an Giblean 1721 (15 an Cèitean 1730)	11 an Gearran 1742	Cuigse
The Earl of Wilmington	16 an Gearran 1742	2 an t-Iuchar 1743	Cuigse
Henry Pelham	27 an Lùnasdal 1743	7 am Màrt 1754	Cuigse
The Duke of Newcastle	16 am Màrt 1754	16 an t-Samhain 1756	Cuigse
The Duke of Devonshire	16 an t-Samhain 1756	25 an t-Ògmhios 1757	Cuigse
The Duke of Newcastle	2 an t-Iuchar 1757	26 an Cèitean 1762	Cuigse
The Earl of Bute	26 an Cèitean 1762	16 an Giblean 1763	Toraidh
George Grenville	16 an Giblean 1763	13 an t-Iuchar 1765	Cuigse
The Marquess of Rockingham	13 an t-Iuchar 1765	30 an t-Iuchar 1766	Cuigse
The Earl of Chatham	30 an t-Iuchar 1766	14 an Damhair 1768	Cuigse
The Duke of Grafton	14 an Damhair 1768	28 am Faoilleach 1770	Cuigse
Lord North	28 am Faoilleach 1770	22 am Màrt 1782	Toraidh
The Marquess of Rockingham	27 am Màrt 1782	1 an t-Iuchar 1782	Cuigse
The Earl of Shelburne	4 an t-Iuchar 1782	2 an Giblean 1783	Cuigse
The Duke of Portland	2 an Giblean 1783	19 an Dùbhlachd 1783	Toraidh/ Coalition
William Pitt an t-Òg	19 an Dùbhlachd 1783	14 am Màrt 1801	Toraidh
Henry Addington	17 am Màrt 1801	10 an Cèitean 1804	Toraidh
William Pitt an t-Òg	10 an Cèitean 1804	23 am Faoilleach 1806	Toraidh
The Lord Grenville	11 an Gearran 1806	31 am Màrt 1807	Whig/ Coalition
The Duke of Portland	31 am Màrt 1807	4 an Damhair 1809	Toraidh
Spencer Perceval	4 an Damhair 1809	11 an Cèitean 1812	Toraidh
The Earl of Liverpool	9 an t-Ògmhios 1812	10 an Giblean 1827	Toraidh
George Canning	10 an Giblean 1827	8 an Lùnasdal 1827	Toraidh
The Viscount Goderich	31 an Lùnasdal 1827	22 am Faoilleach 1828	Toraidh
The Duke of Wellington	22 am Faoilleach 1828	22 an t-Samhain 1830	Toraidh
The Earl Grey	22 an t-Samhain 1830	16 an t-Iuchar 1834	Cuigse
The Viscount Melbourne	16 an t-Iuchar 1834	17 an t-Samhain 1834	Cuigse
The Duke of Wellington (caretaker)	17 an t-Samhain 1834	9 an Dùbhlachd 1834	Conservative
Sir Robert Peel	10 an Dùbhlachd 1834	18 an Giblean 1835	Conservative
The Viscount Melbourne	18 an Giblean 1835	30 an Lùnasdal 1841	Cuigse
Sir Robert Peel	30 an Lùnasdal 1841	30 an t-Ògmhios 1846	Conservative
The Lord John Russell (afterwards PM as Earl Russell)	30 an t-Ògmhios 1846	23 an Gearran 1852	Cuigse
The Earl of Derby	23 an Gearran 1852	19 an Dùbhlachd 1852	Conservative
The Earl of Aberdeen	19 an Dùbhlachd 1852	6 an Gearran 1855	Peelite/ Coalition
The Viscount Palmerston	6 an Gearran 1855	20 an Gearran 1858	Whig
The Earl of Derby	20 an Gearran 1858	12 an t-Ògmhios 1859	Conservative
The Viscount Palmerston	12 an t-Ògmhios 1859	18 an Damhair 1865	Libearalach
The Earl Russell (previously PM as Lord John Russell)	29 an Damhair 1865	28 an t-Ògmhios 1866	Libearalach
The Earl of Derby	28 an t-Ògmhios 1866	27 an Gearran 1868	Conservative
Benjamin Disraeli	27 an Gearran 1868	3 an Dùbhlachd 1868	Conservative
William Gladstone	3 an Dùbhlachd 1868	20 an Gearran 1874	Libearalach
Benjamin Disraeli (from 1876 as Earl of Beaconsfield)	20 an Gearran 1874	23 an Giblean 1880	Conservative
William Gladstone	23 an Giblean 1880	23 an t-Ògmhios 1885	Libearalach
The Marquess of Salisbury	23 an t-Ògmhios 1885	1 an Gearran 1886	Conservative
William Gladstone	1 an Gearran 1886	25 an t-Iuchar 1886	Libearalach
The Marquess of Salisbury	3 an Lùnasdal 1886	15 an Lùnasdal 1892	Conservative
William Gladstone	15 an Lùnasdal 1892	5 am Màrt 1894	Libearalach
The Earl of Rosebery	5 am Màrt 1894	25 an t-Ògmhios 1895	Libearalach
The Marquess of Salisbury	25 an t-Ògmhios 1895	12 an t-Iuchar 1902	Conservative/ Unionist
Arthur Balfour	12 an t-Iuchar 1902	5 an Dùbhlachd 1905	Conservative/ Unionist
Sir Henry Campbell-Bannerman	5 an Dùbhlachd 1905	7 an Giblean 1908	Libearalach
Herbert Henry Asquith	7 an Giblean 1908	7 an Dùbhlachd 1916	Libearalach (afterwards Co-bhann)
David Lloyd George	7 an Dùbhlachd 1916	23 an Damhair 1922	National Liberal/ Coalition
Andrew Bonar Law	23 an Damhair 1922	22 an Cèitean 1923	Conservative
Stanley Baldwin	22 an Cèitean 1923	22 am Faoilleach 1924	Conservative
Ramsay MacDonald	22 am Faoilleach 1924	4 an t-Samhain 1924	Labarach
Stanley Baldwin	4 an t-Samhain 1924	5 an t-Ògmhios 1929	Conservative
Ramsay MacDonald	5 an t-Ògmhios 1929	24 an Lùnasdal 1931	Labarach
Ramsay MacDonald 1	24 an Lùnasdal 1931	7 an t-Ògmhios 1935	National Labour/Riaghaltas Naiseanta
Stanley Baldwin	7 an t-Ògmhios 1935	28 an Cèitean 1937	Conservative/Riaghaltas Naiseanta
Neville Chamberlain	28 an Cèitean 1937	10 an Cèitean 1940	Conservative/Riaghaltas Naiseanta
Winston Churchill	10 an Cèitean 1940	23 an Cèitean 1945	Conservative/Coalition
Winston Churchill 1	23 an Cèitean 1945	26 an t-Iuchar 1945	Conservative/Caretaker Government
Clement Attlee	26 an t-Iuchar 1945	26 an Damhair 1951	Labarach
Sir Winston Churchill	26 an Damhair 1951	6 an Giblean 1955	Conservative
Sir Anthony Eden	6 an Giblean 1955	10 am Faoilleach 1957	Conservative
Harold Macmillan	10 am Faoilleach 1957	19 an Damhair 1963	Conservative
The Earl of Home (from 1963 as Sir Alec Douglas-Home)	19 an Damhair 1963	16 an Damhair 1964	Conservative
Harold Wilson	16 an Damhair 1964	19 an t-Ògmhios 1970	Labarach
Edward Heath	19 an t-Ògmhios 1970	4 am Màrt 1974	Conservative
Harold Wilson	4 am Màrt 1974	5 an Giblean 1976	Labarach
James Callaghan	5 an Giblean 1976	4 an Cèitean 1979	Labarach
Margaret Thatcher	4 an Cèitean 1979	28 an t-Samhain 1990	Conservative
John Major	28 an t-Samhain 1990	2 an Cèitean 1997	Conservative
Tony Blair	2 an Cèitean 1997	27 an t-Ògmhios 2007	Labarach
Gòrdan Mac a' Bhriuthainn	27 an t-Ògmhios 2007	11 an Cèitean 2010	Labarach
David Cameron	11 an Cèitean 2010	làithearach	Conservative

Key:	Cuigse	Toraidh neo Conservative	Conservative/ Unionist	Libearalach	Labarach	Riaghaltas Naiseanta	Co-bhann

Notes

¹On each noted occasion the incumbent Priomh-mhinisteir resigned and was then appointed to form a new government of a significantly different political composition from their old one.