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) operations report for July 22; a GAF operations and recce report for July 22; that German divisional staff are to move from Crete to Tobruk on July 21; with a query from the Prime Minister (PM) on this; and the Chief of the Imperial General Staff's (CIGS's) reply to the PM.