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| 1721 | Walpole, Robert |  |
| 3rd April Appointed Prime Minister of Great Britain, 1st term |
| 3rd April Britain's 1st Prime Minister |
| 1730 | Walpole, Robert | |
| 15th May Appointed Prime Minister of Great Britain, 2nd term |
| 1734 | Walpole, Robert | |
| Appointed Prime Minister of Great Britain, 3rd term |
| 1742 | Compton | |
| 16th Feb Appointed Prime MInister of Great Britain, a "nominal" position, by George II |
| 16th Feb The administration is dominated by John Carteret & Walpole is relied upon for advice |
| 1743 | Pelham, Henry | |
| 27th Aug Appointed Prime Minister of Great Britain |
| 1754 | Pelham-Holles | |
| 16th Mar Appointed Prime Minister of Great Britain, 1st term |
| 1756 | Cavendish, William | |
| 16th Nov Appointed Prime Minister of Great Britain |
| 1757 | Pelham-Holles | |
| 2nd July Appointed Prime Minister of Great Britain, 2nd term |
| 1762 | Stuart | |
| 26th May Appointed Prime Minister of Great Britain |
| 1763 | Grenville, George Nugent Temple | |
| 16th April Appointed Prime Minister of Great Britain |
| 1765 | Watson-Wentworth | |
| 13th July Appointed Prime Minister of Great Britain, 1st term |
| 1768 | Fitzroy | |
| Appointed Prime Minister of Britain |
| 1768 | Grafton | |
| Appointed Prime Minister of Great Britain |
| 1782 | Shelburne | |
| 4th July Appointed Prime Minister of Great Britain |
| 1782 | Watson-Wentworth | |
| Appointed Prime Minister of Great Britain, 2nd term |
| 1783 | Cavendish | |
| Appointed Prime Minister of Great Britain, 1st term |
| 1783 | Pitt the Younger, William | |
| 19th Dec Appointed Prime Minister by George III, Britain's youngest Prime Minister, age 24 |
| 1784 | Pitt the Younger, William | |
| Appointed Prime Minister of Great Britain, 2nd term |
| 1785 | Acton, John Francis Edward | |
| Appointed Prime Minister of Naples |
| 1801 | Addington, Henry | |
| 17th Mar Appointed Prime Minister of Great Britain |
| 1804 | Pitt the Younger, William | |
| 10th May Appointed Prime Minister of Great Britain, 2nd term |
| 1806 | Grenville, George Nugent Temple | |
| 11th Feb Appointed Prime Minister of Great Britain after the death of his cousin William Pitt |
| 1807 | Cavendish | |
| 24th Mar Appointed Prime Minister of Great Britain, 2nd term |
| 1809 | Perceval, Spencer | |
| 4th Oct Appointed Prime Minister of Great Britain |
| 1812 | Banks Jenkinson, Robert | |
| 9th June Appointed Prime Minister of Great Britain |
| 1827 | Canning, George | |
| 10th April Appointed Prime Minister of Britain for three months |
| 1827 | Goderich | |
| 31st Aug Appointed Prime Miinister of Britain, ater the death of George Canning |
| 1828 | Wellesley, Arthur | |
| 9th Jan Appointed Prime Minister of Great Britain by George IV |
| 22nd Jan Fills a vacuum after refusal by Whig & Tory Party leaders to accept the office |
| 1830 | Grey, Charles | |
| Appointed Prime Minister of Great Britain, 1st term |
| 1831 | Grey, Charles | |
| Appointed Prime Minister of Great Britain, 2nd term |
| 1834 | Lamb, William | |
| 18th April Appointed Prime Minister of Great Britain, 1st term |
| 1834 | Peel, Robert | |
| 10th Dec Appointed Prime Minister of Great Britain |
| 1834 | Wellesley, Arthur | |
| 13th Nov Appointed Prime Minister of Great Britain |
| 13th Nov Appointed Prime Minister of Great Britain, 2nd term, November-December |
| 1835 | Lamb, William | |
| 18th Aug Appointed Prime Minister of Great Britain, 2nd term |
| 1835 | Peel, Robert | |
| 18th Feb The Whigs, radicals & Irish agree to joint opposition |
| 1841 | Peel, Robert | |
| 6th Sep Appointed Prime MInister of Great Britain |
| 1846 | Russell | |
| 30th June Appointed Prime Minister of Great Britain, 1st term |
| 1852 | Hamilton-Gordon, George | |
| Appointed Prime Minister of Great Britain |
| 1852 | Stanley, Edward | |
| 23rd Feb Appointed Prime Minister of Great Britain, 1st term |
| 1855 | Temple, Henry John | |
| 6th Feb Appointed Prime Minister of Great Britain, 1st term |
| 1857 | Temple, Henry John | |
| Appointed Prime Minister of Great Britain |
| The Winner of the election with a majority of 85 seats over all other parties combined |
| 1858 | Stanley, Edward | |
| 20th Feb Appointed Prime Minister of Great Britain |
| 20th Feb Appointed Prime Minister of Great Britain, 2nd term |
| 1859 | Temple, Henry John | |
| 18th June Appointed Prime Minister of Great Britain, 2nd term |
| 1865 | Russell | |
| 29th Oct Appointed Prime Minister of Great Britain, 2nd term |
| 1865 | Russell of Kingston, 1st | |
| 29th Oct Sits in the Lords while Gladstone leads the government in the Commons |
| 1865 | Temple, Henry John | |
| Appointed Prime Minister of Great Britain |
| 1866 | Stanley, Edward | |
| 28th June Appointed Prime Minister of Great Britain, 3rd term |
| 1868 | Gladstone, William Ewart | |
| 3rd Dec Appointed Prime Minister of Great Britain, 1st term |
| 1874 | Disraeli, Benjamin | |
| 20th Feb Appointed Prime Minister of Great Britain, 2nd term |
| 1874 | Gascoyne-Cecil, Robert Arthur Talbot | |
| Appointed Prime Minister of Great Britain, 2nd term |
| 1877 | Grey, George | |
| Appointed Prime Minister of NewZealand |
| 1880 | Gladstone, William Ewart | |
| 23rd April Appointed Prime Minister, 2nd term |
| 1885 | Gascoyne-Cecil, Robert Arthur Talbot | |
| 23rd June Appointed Prime Minister of Great Britain, 1st term, a minority administration |
| 23rd Nov Appointed Prime Minister of Great Britain, 2nd term |
| 1886 | Cavendish, Spencer | |
| Declines an offer to become Prime Minister |
| 1886 | Gascoyne-Cecil, Robert Arthur Talbot | |
| 24th July Appointed Prime Minister of Britain, 3rd term, |
| 1886 | Gladstone, William Ewart | |
| 1st Feb Appointed Prime Minister of Great Britain, 3rd term |
| 1st Feb Chamberlain, hostile to Irish home rule, refuses to serve in the Cabinet |
| 1892 | Gladstone, William Ewart | |
| 15th Aug Appointed Prime Minister of Great Britain, 4th term |
| 1894 | Primrose | |
| Appointed Prime Minister of Great Britain |
| 1902 | Balfour, Arthur James | |
| 12th July Appointed Prime Minister of Great Britain, succeeds his uncle, Lord Salisbury |
| 1905 | Campbell-Bannerman, Henry | |
| 5th Dec Appointed Prime Minister of Great Britain, 1st term |
| 9th Dec Offers to make Churchill Financial Secretary under Asquith, Churchill refuses |
| 1908 | Asquith, Henry Herbert | |
| 7th April Appointed Prime Minister of Great Britain, 1st term |
| 1915 | Asquith, Henry Herbert | |
| 25th May Appointed Prime Minister of Great Britain, 4th term |
| 1916 | Lloyd George, David | |
| 6th Dec Appointed Prime Minister of Great Britain, 1st term |
| 1918 | Lloyd George, David | |
| Appointed Prime Minister of Great Britain, 2nd term |
| 1921 | Craig, James | |
| Appointed Prime MInister of Nortern Ireland |
| 1922 | Law, Andrew Bonar | |
| 23rd Oct Appointed Prime Minister of Great Britain |
| 1923 | Baldwin, Stanley | |
| 22nd May Appointed Prime Minister of Great Britain, 1st term |
| 1924 | Baldwin, Stanley | |
| 4th Nov Appointed Prime Minister Great Britain, 2nd term |
| 1924 | MacDonald, James Ramsey | |
| 22nd Jan Appointed Prime Minister of Great Britain, 1st term |
| 1929 | MacDonald, James Ramsey | |
| 5th June Appointed Prime Minister of Great Britain, 2nd term |
| 1931 | Baldwin, Stanley | |
| London Appointed Deputy Prime Minister to MacDonald due to the latter's poor health |
| 1931 | MacDonald, James Ramsey | |
| 26th Aug Appointed Prime Minister of Great Britain 3rd term |
| 9th Nov Appointed Prime Minister of Great Britain, 2nd term |
| 1934 | Baldwin, Stanley | |
| 22nd June London Appointed Deputy Prime Minister |
| 1935 | Baldwin, Stanley | |
| 7th June Appointed Prime Minister of Great Britain, 4th term |
| 1937 | Chamberlain, Neville | |
| 28th May Appointed Prime Minister of Great Britain |
| 1939 | Chamberlain, Neville | |
| 1st Sep Asks Churchill to join the Cabinet as First Lord of the Admiralty |
| 1940 | Churchill, Winston Leonard Spencer | |
| 10th May Appointed Prime Minister of Great Britain, 1st term |
| 3rd Oct Churchill appoints Ernest Bevin as Minister of Labour |
| 1942 | Attlee, Clement Richard | |
| London Appointed Deputy Prime Minister, serves under Winston Churchill |
| 1943 | Brooke | |
| Appointed Prime Minister of Northern Ireland |
| 1945 | Attlee, Clement Richard | |
| 26th July Appointed Prime Minister of Great Britain, 1st term |
| 1945 | Churchill, Winston Leonard Spencer | |
| 23rd May Appointed Prime Minister of Great Britain, 2nd term |
| 1945 | Morrison | |
| London Appointed Deputy Prime Minister |
| 1950 | Attlee, Clement Richard | |
| 11th Jan Announces a general election will be held February 23 |
| 28th Feb Appointed Prime Minister of Great Britain, 2nd term |
| 1951 | Churchill, Winston Leonard Spencer | |
| Attempts to appoint Eden as Deputy PM but George VI refuses due to Churchill's age, 77 |
| 27th Oct Appointed Prime Minister of Great Britain, 3rd term |
| 1955 | Eden, Robert Anthony | |
| 6th April Appointed Prime Minister of Great Britain, 1st term |
| 1957 | Elizabeth II | |
| 10th Jan Appoints MacMillan as Prime Minister |
| 1957 | MacMillan, Maurice Harold | |
| 10th Jan Appointed Prime Minister of Great Britain, 1st term |
| 1959 | MacMillan, Maurice Harold | |
| 10th Jan Appointed Prime Minister of Great Britain, 2nd term |
| 1962 | Brown, George | |
| Appointed Deputy Leader of the Labour Party & also becomes Deputy Prime Minister |
| 1962 | Butler, Richard Austen | |
| London Appointed Deputy Prime Minister |
| 1963 | Douglas-Home, Alexander Frederick | |
| Forms a Cabinet but 2 of the appointments refuse to serve in it |
| 19th Oct Appointed Prime Minister of Great Britain |
| 1964 | Wilson, James Harold | |
| 16th Oct Appointed Prime Minister of Great Britain, 1st term |
| 1966 | Wilson, James Harold | |
| Appointed Prime Minister of Great Britain, 2nd term |
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