List of Prime Ministers of the United Kingdom by tenure

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20 years and 314 days
Robert Walpole (1721–1742)
18 years and 343 days
William Pitt the Younger (1783–1801 and 1804–1806)
14 years and 305 days
Lord Liverpool (1812–1827)
211 days
Bonar Law (1922–1923)
130 days
Lord Goderich (1827–1828)
119 days
George Canning (1827)

This article lists each Prime Minister of the United Kingdom in order of term length. This is based on the difference between dates; if counted by number of calendar days all the figures would be one greater.

Of the 54 Prime Ministers, 9 served more than 10 years while 7 served less than 1 year.

Robert Walpole is the only person to have served as Prime Minister for more than two decades. George Canning served for less than four months before his death.

Ordered by tenure[edit]

Rank Prime Minister Length by time served Tenures Party Start year
1 Sir Robert Walpole 20 years, 314 days 1 Whig 1721
2 William Pitt the Younger 18 years, 343 days 2 Tory (Pittite) 1783
3 The Earl of Liverpool 14 years, 305 days 1 Tory (Pittite) 1812
4 The Marquess of Salisbury 13 years, 252 days 3 Conservative 1885
5 William Ewart Gladstone 12 years, 126 days 4 Liberal 1868
6 Lord North 12 years, 58 days 1 Tory (Northite) 1770
7 Margaret Thatcher 11 years, 209 days 1 Conservative 1979
8 Henry Pelham 10 years, 191 days 1 Whig 1743
9 Tony Blair 10 years, 56 days 1 Labour 1997
10 The Viscount Palmerston 9 years, 141 days 2 Whig / Liberal 1855
11 H. H. Asquith 8 years, 244 days 1 Liberal 1908
12 Sir Winston Churchill 8 years, 239 days 2 Conservative 1940
13 Harold Wilson 7 years, 279 days 2 Labour 1964
14 The Duke of Newcastle 7 years, 205 days 2 Whig 1754
15 Stanley Baldwin 7 years, 82 days 3 Conservative 1923
16 Benjamin Disraeli 6 years, 339 days 2 Conservative 1868
17 Ramsay MacDonald 6 years, 289 days 2 Labour / National Labour 1924
18 Harold Macmillan 6 years, 281 days 1 Conservative 1957
19 The Viscount Melbourne 6 years, 255 days 2 Whig 1834
20 John Major 6 years, 154 days 1 Conservative 1990
21 Clement Attlee 6 years, 92 days 1 Labour 1945
22 David Cameron 6 years, 63 days 1 Conservative 2010
23 Lord John Russell 6 years, 11 days 2 Whig / Liberal 1864
24 David Lloyd George 5 years, 317 days 1 Liberal 1916
25 Sir Robert Peel 5 years, 57 days 2 Conservative 1834
26 The Earl of Derby 3 years, 280 days 3 Conservative 1852
27 Edward Heath 3 years, 259 days 1 Conservative 1970
28 The Earl Grey 3 years, 229 days 1 Whig 1830
29 Arthur Balfour 3 years, 145 days 1 Conservative 1902
30 The Duke of Portland 3 years, 82 days 2 Whig / Tory (Pittite) 1783
31 Henry Addington 3 years, 54 days 1 Tory (Pittite) 1801
32 James Callaghan 3 years, 29 days 1 Labour 1976
33 Neville Chamberlain 2 years, 348 days 1 Conservative 1937
34 The Duke of Wellington 2 years, 320 days 2 Tory 1828
35 Gordon Brown 2 years, 319 days 1 Labour 2007
36 Spencer Perceval 2 years, 221 days 1 Tory (Pittite) 1809
37 Henry Campbell-Bannerman 2 years, 122 days 1 Liberal 1905
38 Theresa May 2 years, 101 days (Incumbent) 1 Conservative 2016
39 George Grenville 2 years, 85 days 1 Whig (Grenvillite) 1763
40 The Earl of Chatham 2 years, 76 days 1 Whig (Chathamite) 1766
41 The Earl of Aberdeen 2 years, 42 days 1 Peelite 1852
42 Sir Anthony Eden 1 year, 279 days 1 Conservative 1955
43 The Earl of Wilmington 1 year, 119 days 1 Whig 1742
44 The Marquess of Rockingham 1 year, 113 days 2 Whig (Rockinghamite) 1765
45 The Earl of Rosebery 1 year, 109 days 1 Liberal 1894
46 The Duke of Grafton 1 year, 106 days 1 Whig (Chathamite) 1768
47 The Lord Grenville 1 year, 42 days 1 Whig 1806
48 Sir Alec Douglas-Home 362 days 1 Conservative (Scot. Unionist) 1963
49 The Earl of Bute 317 days 1 Tory 1762
50 The Earl of Shelburne 266 days 1 Whig (Chathamite) 1782
51 The Duke of Devonshire 225 days 1 Whig 1756
52 Bonar Law 211 days 1 Conservative (Scot. Unionist) 1922
53 The Viscount Goderich 130 days 1 Tory (Canningite) 1827
54 George Canning 119 days 1 Tory (Canningite) 1827

See also[edit]

External links[edit]

  • "Past Prime Ministers". gov.uk. Government of the United Kingdom. Archived from the original on 25 August 2008.