| Name | Time in office | Political party |
|---|---|---|
| Robert Walpole | 1730 – 1742 | Whig |
| Spencer Compton | 1742 – 1743 | Whig |
| Henry Pelham | 1743 – 1754 | Whig |
| Duke of Newcastle | 1754 – 1756 | Whig |
| Duke of Devonshire | 1756 – 1757 | Whig |
| Duke of Newcastle | 1757 – 1762 | Whig |
| Earl of Bute | 1762 – 1763 | Tory |
| George Grenville | 1763 – 1765 | Whig |
| Marquess of Rockingham | 1765 – 1766 | Whig |
| William Pitt | 1766 – 1768 | Whig |
| Duke of Grafton | 1768 – 1770 | Whig |
| Lord North | 1770 – 1782 | Tory |
| Marquess of Rockingham | 1782 | Whig |
| Earl of Shelburne | 1782 – 1783 | Whig |
| Duke of Portland | 1783 | Whig |
| William Pitt the Younger | 1783 – 1801 | Tory |
| Henry Addington | 1801 – 1804 | Tory |
| William Pitt the Younger | 1804 – 1806 | Tory |
| William Grenville | 1806 – 1807 | Whig |
| Duke of Portland | 1807 – 1809 | Whig |
| Spencer Perceval | 1809 – 1812 | Tory |
| Earl of Liverpool | 1812 – 1827 | Tory |
| George Canning | 1827 – 1827 | Tory |
| Viscount Goderich | 1827 – 1828 | Tory |
| Duke of Wellington | 1828 – 1830 | Tory |
| Earl Grey | 1830 – 1834 | Whig |
| Duke of Wellington | 1834 | Tory |
| Viscount Melbourne | 1834 | Whig |
| Sir Robert Peel | 1834 – 1835 | Conservative |
| Viscount Melbourne | 1835 – 1841 | Whig |
| Sir Robert Peel | 1841 – 1846 | Conservative |
| Lord John Russell | 1846 – 1852 | Whig |
| The Earl of Derby | 1852 | Conservative |
| Earl of Aberdeen | 1852 – 1855 | Conservative |
| Viscount Palmerston | 1855 – 1858 | Whig |
| The Earl of Derby | 1858 – 1859 | Conservative |
| Viscount Palmerston | 1859 – 1865 | Whig |
| Lord John Russell | 1865 – 1866 | Whig |
| The Earl of Derby | 1866 – 1868 | Conservative |
| Benjamin Disraeli | 1868 – 1868 | Conservative |
| William Ewart Gladstone | 1868 – 1874 | Liberal |
| Benjamin Disraeli | 1874 – 1880 | Conservative |
| William Ewart Gladstone | 1880 – 1885 | Liberal |
| Marquess of Salisbury | 1885 – 1886 | Conservative |
| William Ewart Gladstone | 1886 – 1886 | Liberal |
| Marquess of Salisbury | 1886 – 1892 | Conservative |
| William Ewart Gladstone | 1892 – 1894 | Liberal |
| Earl of Rosebery | 1894 – 1895 | Liberal |
| Marquess of Salisbury | 1895 – 1902 | Conservative |
| Arthur Balfour | 1902 – 1905 | Conservative |
| Henry Campbell-Bannerman | 1905 – 1908 | Liberal |
| Herbert Asquith | 1908 – 1916 | Liberal |
| David Lloyd George | 1916 – 1922 | Liberal |
| Andrew Bonar Law | 1922 – 1923 | Conservative |
| Stanley Baldwin | 1923 – 1924 | Conservative |
| Ramsay MacDonald | 1924 | Labour |
| Stanley Baldwin | 1924 – 1929 | Conservative |
| Ramsay MacDonald | 1929 – 1935 | Labour |
| Stanley Baldwin | 1935 – 1937 | Conservative |
| Neville Chamberlain | 1937 – 1940 | Conservative |
| Winston Churchill | 1940 – 1945 | Conservative |
| Clement Attlee | 1945 – 1951 | Labour |
| Winston Churchill | 1951 – 1955 | Conservative |
| Anthony Eden | 1955 – 1957 | Conservative |
| Harold Macmillan | 1957 – 1963 | Conservative |
| Alec Douglas-Home | 1963 – 1964 | Conservative |
| Harold Wilson | 1964 – 1970 | Labour |
| Edward Heath | 1970 – 1974 | Conservative |
| Harold Wilson | 1974 – 1976 | Labour |
| James Callaghan | 1976 – 1979 | Labour |
| Margaret Thatcher | 1979 – 1990 | Conservative |
| John Major | 1990 – 1997 | Conservative |
| Tony Blair | 1997 – 2007 | Labour |
| Gordon Brown | 2007 – 2010 | Labour |
| David Cameron | 2010 – 2016 | Conservative |
| Theresa May | 2016 – 2019 | Conservative |
| Boris Johnson | 2019 – Incumbent | Conservative |
For a more detailed list, click the link below:
https://en.wikipedia.org/wiki/List_of_prime_ministers_of_the_United_Kingdom
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