| Government (and year) | Leader of the Opposition |
| Labour (1945 - 1951) | |
| Conservative (1951 - 1964) | |
| Conservative (1951 - 1964) | |
| Conservative (1951 - 1964) | |
| Labour (1964 - 1970) | |
| Labour (1964 - 1970) | |
| Conservative (1970 - 1974) | |
| Labour (1974 - 1979) | |
| Labour (1974 - 1979) | |
| Conservative (1979 - 1997) | |
| | Government (and year) | Leader of the Opposition |
| Conservative (1979 - 1997) | |
| Conservative (1979 - 1997) | |
| Conservative (1979 - 1997) | |
| Conservative (1979 - 1997) | |
| Labour (1997 - 2010?) | |
| Labour (1997 - 2010?) | |
| Labour (1997 - 2010?) | |
| Labour (1997 - 2010?) | |
| Labour (1997 - 2010?) | |
| Conservative (1951 - 1964) | |
| Conservative (1951 - 1964) | |
| Conservative (1979 - 1997) | |
|