| Term | Party | Prime Minister | % Correct |
|---|---|---|---|
| 2019-Present | Conservative | Boris Johnson | 96%
|
| 1979-1990 | Conservative | Margaret Thatcher | 95%
|
| 1951-1955 | Conservative | Winston Churchill | 95%
|
| 1997-2007 | Labour | Tony Blair | 93%
|
| 2010-2016 | Conservative | David Cameron | 90%
|
| 2007-2010 | Labour | Gordon Brown | 90%
|
| 2016-2019 | Conservative | Theresa May | 90%
|
| 1945-1952 | Labour | Clement Attlee | 88%
|
| 1990-1997 | Conservative | John Major | 85%
|
| 1964-1970 | Labour | Harold Wilson | 82%
|
| 1974-1976 | Labour | Harold Wilson | 82%
|
| 1957-1963 | Conservative | Harold Macmillan | 74%
|
| 1955-1957 | Conservative | Anthony Eden | 73%
|
| 1970-1974 | Conservative | Edward Heath | 73%
|
| 1963-1964 | Conservative | Alec Douglas-Home | 70%
|
| 1976-1979 | Labour | James Callaghan | 70%
|