Document Title Government Code and Cypher School: Signals Intelligence Passed to the Prime Minister, Messages and Correspondence
Reference HW 1/319
Conflicts Second World War
Themes Military Intelligence and Operations
Regions Africa, Atlantic, Mediterranean
Countries Gibraltar, Libya
Document Type Signals Intelligence
Organisations Government Code and Cypher School
People Not Defined


A file of signals intelligence reports, messages, and correspondence issued by the Government Code and Cypher School and sent by the head ('C') of the Secret Intelligence Service (MI6) to the Prime Minister, Winston Churchill. This file contains a message from C to the Director of Naval Intelligence (DNI), with an attached Naval Headlines report for December 11 on German, Italian and Spanish activity, with queries from the Prime Minister (PM) to the First Sea Lord (1SL). Note that the 1SL had spoken personally to the PM.


naval intelligence, German U-boats, German navy, Italian navy, convoys, warships, shipping, Italian air force, Spanish armed forces

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