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 South Europe: a 10th Army report for January 28; and a 10th Army day report for January 27; on South-east Europe: that the German Air Force (GAF) lose 3 seaplanes and 3 transports off Mikonos, on January 27; and T77/113, sent to the Director of Military Intelligence (DMI) (see 5515).