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, giving a post-mortem on the September 14 landing at Tobruk and also covering Axis measures against the Soviet Black Sea fleet; and from the Italian consul in Lobito, on the build-up of Anglo-U.S. forces in west Africa, on September 14.