1Liz Truss (Conservative)
2Anthony Eden (Conservative)
3Alec Douglas-Home (Conservative)
4Theresa May (Conservative)
5Edward Heath (Conservative)
6James Callaghan (Labour)
7Ramsay MacDonald (Labour)
8Bonar Law (Conservative)
9Rishi Sunak (Conservative)
10John Major (Conservative)
11Boris Johnson (Conservative)
12Neville Chamberlain (Conservative)
13Margaret Thatcher (Conservative)
14David Cameron (Conservative)
15Tony Blair (Labour)