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 a BONIFACE report on North Africa: on cannon ammunition for Me110 aircraft being required urgently by German Air Force (GAF) Africa from January 8; and a BONIFACE report on an air transport unit operating in the Mediterranean area moving to central Germany, possibly to reequip, on January 12.