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 on the German Navy: a general report for July 22; Naval Headlines, covering Italian activity; and messages from the Portuguese minister in Stockholm, on German and French views on the war situation, on July 22; from the Portuguese minister in Tokyo, on Japanese relations with the Soviet Union and Germany, on July 24; from the Turkish minister in Madrid, on Spain and the war, on July 21; and from the Turkish minister in Cairo, on British military failures and future policy, on July [22].