Document Title Government Code and Cypher School: Signals Intelligence Passed to the Prime Minister, Messages and Correspondence
Reference HW 1/1985
Conflicts Second World War
Themes Foreign Policy and International Relations
Regions Africa, Atlantic, East Asia, Europe, Mediterranean
Countries Belgium, China, Denmark, France, Germany, Great Britain, Holland, Iceland, Italy, Japan, Netherlands, Norway, Portugal, Sicily, Spain
Document Type Signals Intelligence
Organisations Government Code and Cypher School, Security Service
People Edward Bridges, Alexander Cadogan


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: the Japanese minister in Lisbon recommends a conciliatory attitude towards Portugal, on August 31; and reports that an Allied assault on Europe should be regarded as imminent, making a guess as to the probable target areas for landings, on September 2; and from the Japanese ambassador in Berlin, relating the views of a German contact on the Italian campaign, on September 3.


Portuguese neutrality, Japanese foreign policy, Axis powers, assessing enemy strength, German strategy, invasion of Italy

Cookies Notification

This site uses cookies. By continuing to browse the site you are agreeing to our use of cookies. Find out more.