Government Code and Cypher School: Signals Intelligence Passed to the Prime Minister, Messages and Correspondence

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 the Mediterranean: that a German Air Force (GAF) reconnaissance unit is to transfer from Trapani to central Italy, on April 16; and Naval Headlines sent to the Director of Naval Intelligence (DNI) (see 3012).