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 messages: an Italian Air Force report on operations and intentions in North Africa, on January 27; with the Prime Minister's (PM's) query; and the reply of the Chief of the Imperial General Staff (CIGS). This file does not include a summary of naval messages 100652 and 100670.