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: from the Mexican ambassador in London, on an air-raid on London, on February 18-19; and on another air raid on London, on February 20-21; from the Iraqi minister in London, reporting air raid damage to the Legation, on February 19; from the Saudi Arabian chargé in London, describing air raids on England, and Jewish terrorism in Palestine, on February 19; from the Persian ambassador in London, regarding air raids on London, and east European politics, on February 21; and from the Chilean ambassador in London, detailing air raids on London on February 19-20 and 20-21.