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 July 7, with a query from the Prime Minister (PM) query to the Chief of the Imperial General Staff (CIGS); a GAF report for July 8, with a query from the PM; and the CIGS's reply to the PM's queries; and Naval Headlines, covering Italian activity, and congestion at Tobruk.