Secretary of State for Dominion Affairs

The position of Secretary of State for Dominion Affairs was a British cabinet level position created in 1925 to deal with British relations with the Dominions — Canada, Australia, New Zealand, South Africa, Newfoundland, and the Irish Free State, as well as the self-governing colony of Southern Rhodesia. In 1947, the name of the office was changed to the Secretary of State for Commonwealth Relations. When initially created the office was held in tandem with that of Secretary of State for the Colonies; this persisted until June 1930. On two subsequent occasions the offices were briefly held by the same person. The Secretary was supported by an Under-Secretary of State for Dominion Affairs.

Secretaries of State for Dominion Affairs, 1925-1947

Leo Amery (11 June 1925 - 4 June 1929)
Sidney James Webb, 1st Baron Passfield (7 June 1929 - 5 June 1930)
James Henry Thomas (5 June 1930 - 22 November 1935)
Malcolm MacDonald (22 November 1935 - 16 May 1938)
Edward Montagu Cavendish Stanley, Lord Stanley (16 May 1938 - 31 October 1938)
Malcolm MacDonald (31 October 1938 - 29 January 1939)
Sir Thomas Walker Inskip (29 January 1939 - 3 September 1939)
Anthony Eden (3 September 1939 - 14 May 1940)
Thomas Inskip, 1st Viscount Caldecote (14 May 1940 - 3 October 1940)
Robert Arthur James Gascoyne-Cecil, Viscount Cranborne (3 October 1940 - 19 February 1942)
Clement Attlee (19 February 1942 - 24 September 1943)
Robert Arthur James Gascoyne-Cecil, Viscount Cranborne (24 September 1943 - 26 July 1945)
Viscount Addison (3 August 1945 - 7 July 1947)

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History of UK Government Departments with Responsibility for Foreign Affairs
Colonial Office 1768 – 1782 Secretaries Undersecretaries	Home Office 1782 – 1794 Secretaries Undersecretaries	War Office 1794 – 1801 Secretaries Undersecretaries	War and Colonial Office 1801 – 1854 Secretaries Undersecretaries	Colonial Office 1854 – 1925 Secretaries Undersecretaries	Colonial Office 1925 – 1966 Secretaries Ministers Undersecretaries		Commonwealth Office 1966 – 1968 Secretaries Ministers Undersecretaries	Foreign and Commonwealth Office 1968 – Present Secretaries Ministers Undersecretaries
	Home Office 1782 – 1794 Secretaries Undersecretaries	War Office 1794 – 1801 Secretaries Undersecretaries			Dominions Office 1925 – 1947 Secretaries Undersecretaries	Commonwealth Relations Office 1947 – 1966 Secretaries Ministers Undersecretaries
.				India Office 1858 – 1937 Secretaries Undersecretaries	India and Burma Office 1937 – 1947 Secretaries Undersecretaries
Foreign Office 1782 – 1968 Secretaries Ministers Undersecretaries