Document Title Government Code and Cypher School: Signals Intelligence Passed to the Prime Minister, Messages and Correspondence
Reference HW 1/3109
Conflicts Second World War
Themes Weapons Technology and Nuclear Warfare
Regions Not Defined
Countries Not Defined
Document Type Memoranda, Memoranda
Organisations Foreign Office, 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 comment by the Chief of the Air Staff (CAS) on new German aircraft; and a comment by the First Sea Lord (1SL) (see 7184 and 7241).


German air force, jet aircraft, weapons development, assessing enemy strength

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