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 reports: Naval Headlines, covering Italian activity; from the Chinese ambassador in Kuibyshev on Soviet military plans, from July 15; and from the Japanese minister in Madrid, on the German view on the prospects of an Allied attack on Dakar, from July 11.