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: Mr Loxley's copy of the Sigint summary, for other reports (see also 5668); that the Allies carry out mass bombing raids for the first time in support of the Anzio/Nettuno bridgehead on February 10; of the results of Allied air raids against Piombino and San Stefano, on January 8/9; and of 2 German cargo ships being sunk in the Adriatic.