0118

File Title Government Code and Cypher School: Signals Intelligence Passed to the Prime Minister, Messages and Correspondence
Reference HW 1/118
Date 7 October 1941
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 message to the Prime Minister (PM) from C referring to the separation of U-boat ciphers from the main fleet traffic, and consequential difficulties.

Document Title Date
i Front Cover 7 October 1941 Download PDF (314 KB)
1st Government Code and Cypher School: Signals Intelligence Passed to the Prime Minister, Messages and Correspondence 7 October 1941 Download PDF (265 KB)
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