| Years | Prime minister | % Correct |
|---|---|---|
| 1979-1990 | Margaret Thatcher | 99%
|
| 1940-1945 | Winston Churchill | 98%
|
| 1951-1955 | Winston Churchill | 98%
|
| 2019-... | Boris Johnson | 97%
|
| 2010-2016 | David Cameron | 96%
|
| 2007-2010 | Gordon Brown | 95%
|
| 2016-2019 | Theresa May | 95%
|
| 1997-2007 | Tony Blair | 95%
|
| 1990-1997 | John Major | 94%
|
| 1937-1940 | Neville Chamberlain | 90%
|
| 1945-1951 | Clement Attlee | 88%
|
| 1964-1970 | Harold Wilson | 85%
|
| 1974-1976 | Harold Wilson | 85%
|
| 1970-1974 | Edward Heath | 79%
|
| 1957-1963 | Harold Macmillan | 76%
|
| 1916-1922 | David Lloyd George | 75%
|
| 1976-1979 | James Callaghan | 75%
|
| 1955-1957 | Anthony Eden | 73%
|
| 1923-1924 | Stanley Baldwin | 67%
|
| 1924-1929 | Stanley Baldwin | 67%
|
| 1935-1937 | Stanley Baldwin | 67%
|
| 1963-1964 | Alec Douglas-Home | 65%
|
| 1924 | Ramsay MacDonald | 65%
|
| 1929-1935 | Ramsay MacDonald | 65%
|
| 1908-1916 | Herbert Henry Asquith | 60%
|
| 1922-1923 | Andrew Bonar Law | 56%
|
| 1905-1908 | Henry Campbell-Bannerman | 48%
|
| 1902-1905 | Arthur Balfour | 46%
|