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: Naval Headlines, including an Italian report of intensified Allied air activity connected with the Egypt offensive; and from the Turkish ambassador in London, reports on discussions with Allied VIPs while on a trip to Dover with Churchill, on October 24; with a briefing note.