1916-1921 David Lloyd George (Liberal leading War Government,Coalition Government)
1918 def: William Adamson [Labour],H.H.Asquith [Liberal],Éamon de Valera [Sinn Féin],John Dillon [Irish Parliamentary],Henry Page Croft [National]
1921-1926 Austen Chamberlain (Coalition Government,Conservative Majority)
1921 def: J.R.Clynes [Labour],H.H.Asquith [Liberal]
1926-1931 Ramsey MacDonald (Labour Majority,Labour Minority with Liberal support and confidence)
1926 def: Austen Chamberlain [Conservative],Sir Donald Maclean [Liberal]
1931-1940 Stanley Baldwin (Conservative Majority)
1931 def: Ramsey MacDonald [Labour],Sir Donald Maclean [Liberal],Oswald Mosley [SBP]
1935 def: Arthur Henderson [Labour],Sir Archibald Sinclair [Liberal],Oswald Mosley [SBP]
1940-19xx A.V. Alexander (Labour-Liberal Coalition)
1940 def: Stanley Baldwin [Conservative],Sir Archibald Sinclair [Liberal],John Strachey [SBP]
1945 def: Samuel Hoare [Conservative],Sir Archibald Sinclair [Liberal],John Strachey [SBP]
1918 def: William Adamson [Labour],H.H.Asquith [Liberal],Éamon de Valera [Sinn Féin],John Dillon [Irish Parliamentary],Henry Page Croft [National]
1921-1926 Austen Chamberlain (Coalition Government,Conservative Majority)
1921 def: J.R.Clynes [Labour],H.H.Asquith [Liberal]
1926-1931 Ramsey MacDonald (Labour Majority,Labour Minority with Liberal support and confidence)
1926 def: Austen Chamberlain [Conservative],Sir Donald Maclean [Liberal]
1931-1940 Stanley Baldwin (Conservative Majority)
1931 def: Ramsey MacDonald [Labour],Sir Donald Maclean [Liberal],Oswald Mosley [SBP]
1935 def: Arthur Henderson [Labour],Sir Archibald Sinclair [Liberal],Oswald Mosley [SBP]
1940-19xx A.V. Alexander (Labour-Liberal Coalition)
1940 def: Stanley Baldwin [Conservative],Sir Archibald Sinclair [Liberal],John Strachey [SBP]
1945 def: Samuel Hoare [Conservative],Sir Archibald Sinclair [Liberal],John Strachey [SBP]