| Years in Office | Party | Answer | % Correct |
|---|---|---|---|
| 2019- | Conservative | Boris Johnson | 97%
|
| 2005-2016 | Conservative | David Cameron | 95%
|
| 1975-1990 | Conservative | Margaret Thatcher | 95%
|
| 2016-2019 | Conservative | Theresa May | 95%
|
| 1994-2007 | Labour | Tony Blair | 95%
|
| 2007-2010 | Labour | Gordon Brown | 92%
|
| 2020- | Labour | Keir Starmer | 91%
|
| 1940-1955 | Conservative | Winston Churchill | 91%
|
| 2015-2020 | Labour | Jeremy Corbyn | 90%
|
| 1990-1995 | Conservative | John Major | 89%
|
| 1963 | Labour | George Brown | 85%
|
| 2010-2015 | Labour | Ed Miliband | 79%
|
| 1935-1955 | Labour | Clement Attlee | 77%
|
| 1963-1976 | Labour | Harold Wilson | 75%
|
| 2001-2003 | Conservative | Iain Duncan Smith | 74%
|
| 1937-1940 | Conservative | Neville Chamberlain | 73%
|
| 1965-1975 | Conservative | Edward Heath | 71%
|
| 1976-1980 | Labour | James Callaghan | 71%
|
| 2007-2015 | Liberal Democrat | Nick Clegg | 70%
|
| 1955-1957 | Conservative | Anthony Eden | 68%
|
| 1957-1963 | Conservative | Harold Macmillan | 68%
|
| 1992-1994 | Labour | John Smith | 68%
|
| 2020- | Liberal Democrat | Ed Davey | 64%
|
| 1963-1965 | Conservative | Alec Douglas-Home | 63%
|
| 1983-1992 | Labour | Neil Kinnock | 63%
|
| 1980-1983 | Labour | Michael Foot | 62%
|
| 1926-1931 | Liberal | David Lloyd George | 60%
|
| 1911-1914, 1922-1931 | Labour | Ramsay MacDonald | 58%
|
| 1997-2001 | Conservative | William Hague | 57%
|
| 2019 | Liberal Democrat | Jo Swinson | 55%
|
| 1923-1937 | Conservative | Stanley Baldwin | 54%
|
| 2003-2005 | Conservative | Michael Howard | 50%
|
| 1908-1926 | Liberal | H H Asquith | 48%
|
| 2010 (Acting), 2015 (Acting) | Labour | Harriet Harman | 45%
|
| 1899-1908 | Liberal | Sir Henry Campbell-Bannerman | 42%
|
| 2007 (Acting), 2017-2019 | Liberal Democrat | Vince Cable | 42%
|
| 1916-1921, 1922-1923 | Conservative | Andrew Bonar Law | 41%
|
| 1988-1999 | Liberal Democrat | Paddy Ashdown | 41%
|
| 1906-1908 | Labour | Keir Hardie | 39%
|
| 2015-2017 | Liberal Democrat | Tim Farron | 39%
|
| 1999-2006 | Liberal Democrat | Charles Kennedy | 37%
|
| 2006-2007 | Liberal Democrat | Menzies Campbell | 35%
|
| 1902-1911 | Conservative | Arthur Balfour | 33%
|
| 1976-1988, 1988 (Joint) | SDP, Liberal Democrat | David Steel | 32%
|
| 1994 (Acting) | Labour | Margaret Beckett | 32%
|
| 1885-1902 | Conservative | Lord Salisbury | 30%
|
| 1955-1963 | Labour | Hugh Gaitskell | 29%
|
| 1983-1987 | SDP | David Owen | 26%
|
| 1967-1976 | Liberal | Jeremy Thorpe | 26%
|
| 1982-1983 | SDP | Roy Jenkins | 26%
|
| 1956-1967, 1976 (Acting) | Liberal | Jo Grimond | 14%
|
| 1908-1910, 1914-1917, 1931-1932 | Labour | Arthur Henderson | 12%
|
| 1945-1956 | Liberal | Clement Davies | 10%
|
| 1932-1935 | Labour | George Lansbury | 9%
|
| 1955 | Labour | Herbert Morrison | 9%
|
| 1935-1945 | Liberal | Archibald Sinclair | 6%
|
| 1987-1988, 1988 (Joint) | Liberal, Liberal Democrat | Bob Maclennan | 6%
|
| 1931-1935 | Liberal | Herbert Samuel | 4%
|
| 1921-1922 | Labour | J R Clynes | 4%
|
| 1910-1911 | Labour | George Barnes | 3%
|
| 1917-1921 | Labour | William Adamson | 3%
|