0380

File Title Government Code and Cypher School: Signals Intelligence Passed to the Prime Minister, Messages and Correspondence
Reference HW 1/380
Date 20 February 1942
Government Department Government Code and Cypher School
File Accession Date 1993

Description

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 correspondence: a summary of naval messages and actual messages with translations sent to the First Sea Lord (1SL) under the reference C/8801. The technical explanation to the Prime Minister (PM) from C is not included.

Document Title Date
i Front Cover 20 February 1942 Download PDF (369 KB)
1st Government Code and Cypher School: Signals Intelligence Passed to the Prime Minister, Messages and Correspondence 20 February 1942 Download PDF (303 KB)
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