Document Title Government Code and Cypher School: Signals Intelligence Passed to the Prime Minister, Messages and Correspondence
Reference HW 1/453
Conflicts Second World War
Themes Military Intelligence and Operations
Regions Atlantic, Europe, Mediterranean
Countries Gibraltar, Italy, Malta, Norway
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 includes the following report: a Naval Headlines report, covering German and Italian activity; with a query from the Prime Minister (PM) to the First Sea Lord (ISL); and the ISL's reply, on March 26.


naval intelligence, German U-boats, Italian navy, warships

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