EncyclopediaPrime Ministers of Great Britain| Prime Minister | Party1 | Dates in Office |
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| Sir Robert Walpole | | 1721–42 | | Earl of Wilmington | | 1742–43 | | Henry Pelham | | 1743–54 | | Duke of Newcastle | | 1754–56 | | Duke of Devonshire | | 1756–57 | | Duke of Newcastle | | 1757–62 | | Earl of Bute | | 1762–63 | | George Grenville | | 1763–65 | | Marquess of Rockingham | | 1765–66 | | William Pitt the Elder | | 1766–68 | | Duke of Grafton | | 1768–70 | | Lord North | | 1770–82 | | Marquess of Rockingham | | 1782 | | Earl of Shelburne | | 1782–83 | | Duke of Portland | | 1783 | | William Pitt the Younger | Tory | 1783–1801 | | Henry Addington | Tory | 1801–4 | | William Pitt the Younger | Tory | 1804–6 | | Baron Grenville | Whig | 1806–7 | | Duke of Portland | Tory | 1807–9 | | Spencer Perceval | Tory | 1809–12 | | Earl of Liverpool | Tory | 1812–27 | | George Canning | Tory | 1827 | | Viscount Goderich | Tory | 1827–28 | | Duke of Wellington | Tory | 1828–30 | | Earl Grey | Whig | 1830–34 | | Viscount Melbourne | Whig | 1834 | | Sir Robert Peel | Tory | 1834–35 | | Viscount Melbourne | Whig | 1835–41 | | Sir Robert Peel | Conservative | 1841–46 | | Lord John Russell | Whig | 1846–52 | | Earl of Derby | Conservative | 1852 | | Earl of Aberdeen | Peelite Conservative | 1852–55 | | Viscount Palmerston | Liberal | 1855–58 | | Earl of Derby | Conservative | 1858–59 | | Viscount Palmerson | Liberal | 1859–65 | | Earl Russell | Liberal | 1865–66 | | Earl of Derby | Conservative | 1866–68 | | Benjamin Disraeli | Conservative | 1868 | | William Gladstone | Liberal | 1868–74 | | Benjamin Disraeli | Conservative | 1874–80 | | William Gladstone | Liberal | 1880–85 | | Marquess of Salisbury | Conservative | 1885–86 | | William Gladstone | Liberal | 1886 | | Marquess of Salisbury | Conservative | 1886–92 | | William Gladstone | Liberal | 1892–94 | | Earl of Rosebery | Liberal | 1894–95 | | Marquess of Salisbury | Conservative | 1895–1902 | | Arthur Balfour | Conservative | 1902–5 | | Sir Henry Campbell-Bannerman | Liberal | 1905–8 | | Herbert Asquith | Liberal | 1908–15 | | Herbert Asquith | Coalition | 1915–16 | | David Lloyd George | Coalition | 1916–22 | | Andrew Bonar Law | Conservative | 1922–23 | | Stanley Baldwin | Conservative | 1923–24 | | Ramsay MacDonald | Labour | 1924 | | Stanley Baldwin | Conservative | 1924–29 | | Ramsay MacDonald | Labour | 1929–31 | | Ramsay MacDonald | National (Coalition) | 1931–35 | | Stanley Baldwin | National | 1935–37 | | Neville Chamberlain | National | 1937–40 | | Winston Churchill | Coalition | 1940–45 | | Clement Attlee | Labour | 1945–51 | | Sir Winston Churchill | Conservative | 1951–55 | | Sir Anthony Eden | Conservative | 1955–57 | | Harold Macmillan | Conservative | 1957–63 | | Sir Alec Douglas-Home | Conservative | 1963–64 | | Harold Wilson | Labour | 1964–70 | | Edward Heath | Conservative | 1970–74 | | Harold Wilson | Labour | 1974–76 | | James Callaghan | Labour | 1976–79 | | Margaret Thatcher | Conservative | 1979–90 | | John Major | Conservative | 1990–97 | | Tony Blair | Labour | 1997–2007 | | Gordon Brown | Labour | 2007– | 1 The modern party system did not evolve until the end of the 18th cent. The Columbia Electronic Encyclopedia, 6th ed. Copyright © 2007, Columbia University Press. All rights reserved.
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