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 North Africa: a German Air Force (GAF) report for 14:30 on July 17, of action near El Alamein; a GAF report for 10:30 of action near El Alamein; and a return from a GAF air recce unit, for July 17; and on Crete: a GAF report for July 17.