● Government Ministries

Old War Office Building

Map of Whitehall Place, London □

MAF - Ministry of Agriculture and Fisheries ..

MEW - Ministry of Economic Warfare .. 

MHS - Ministry of Home Security ..
MoF - Ministry of Food ..
MoI - Ministry of Information ..

Air Ministry - Adastral House ..
Air Ministry & British aerospace industry ..
British Government Changes WW2 ..

British re-armament - 1934 to 1939 ..
Chamberlain War Ministry ..         

Churchill Chiefs of Staff ..

Churchill War Ministry ..
Defence - Ministries .. 

Defence Regulations ..  

Emergency Powers (Defence) Act 1939 ..
General Register Office ..
Economic Information Unit ..

Land Settlement Association ..  
Lend-Lease Act 41-3-11 ..  

NSA - National Service Act ..    
Parliament at War ..
Sex Disqualification (Removal) Act 1919 ..  

Treachery Act 1940 ..

War Office ..
War Rooms ..
WarAg - Farming in Britain During the Second World War ..

War Office ..
https://en.wikipedia.org/wiki/Chamberlain_war_ministry .
https://en.wikipedia.org/wiki/Churchill_war_ministry .
https://en.wikipedia.org/wiki/War_cabinet .
https://en.wikipedia.org/wiki/War_Office .

https://en.wikipedia.org/wiki/Ministry_of_Information_(United_Kingdom) .

Predecessors of the modern Ministry of Defence:

Admiralty.
Air Ministry.
Ministry of Aviation.
Ministry of Defence.
War Office.

During the 1920s and 1930s, British civil servants and politicians, looking back at the performance of the state during the First World War, concluded that there was a need for greater co-ordination between the three services that made up the armed forces of the United Kingdom—the Royal Navy, the British Army and the Royal Air Force. The formation of a united ministry of defence was rejected by David Lloyd George's coalition government in 1921; but the Chiefs of Staff Committee was formed in 1923, for the purposes of inter-service co-ordination. As rearmament became a concern during the 1930s, Stanley Baldwin created the position of Minister for Co-ordination of Defence. Lord Chatfield held the post until the fall of Neville Chamberlain's government in 1940; his success was limited by his lack of control over the existing Service departments and his limited political influence.

Prior to the Second World War defence policy was co-ordinated by the Committee of Imperial Defence (CID). In 1936 the post of Minister for Co-ordination of Defence was established, though he did not have a department and the political heads of the three services—the First Lord of the Admiralty for the Royal Navy, the Secretary of State for War for the Army and the Secretary of State for Air for the Royal Air Force—continued to attend Cabinet.

On the outbreak of war in 1939 the CID was suspended and on 3 April 1940 the office of Minister for Co-ordination of Defence was abolished. Winston Churchill, on forming his government in May 1940, created the office of Minister of Defence to exercise ministerial control over the Chiefs of Staff Committee and to co-ordinate defence matters. The heads of the three services were not included in the War Cabinet. The Minister had few departments, the most famous of which was MD1 which allowed unusual ideas for weapons to be developed under the patronage of Churchill with less interference from the services and got the nickname "Churchill's Toyshop".

https://en.wikipedia.org/wiki/Ministry_of_Defence_(1947%E2%80%931964) .

https://en.wikipedia.org/wiki/Ministry_of_Defence_(United_Kingdom) .

https://en.wikipedia.org/wiki/Ministry_of_Defence_(1947%E2%80%931964)#Ministers_of_Defence,_1940%E2%80%931964 .

Churchill Chiefs of Staff ..

Churchill War Ministry .. 

War Rooms ..
Resource War ..