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: on German Air Force (GAF) air operations for November 28; on General Osterkamp's urgent appeal for armoured cars, on November 29; Naval Headlines 151: reporting on German, Italian and Spanish activity; and 466/4 and Headlines No 149 with the Prime Minister's (PM's) queries and replies from the Chief of the Air Staff (CAS) and the First Sea Lord (ISL), not included (to Assistant Chief of Air Staff Intelligence [ACASI] under C/8208); see also HW1/[13/10].