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: of a temporary suspension of sea transport between Italy and Africa on November 11; of damage caused in RAF raids on Benghazi, Gazala and Derna on November 11; that the 10th Air Corps is to take over convoy protection while a special operation is carried out on November 12; and of the Turkish attitude to war from the Japanese ambassador in Ankara on October 24.