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: a report on Libya for May 29; a report of photographic reconnaissance, and a successful STORCH operation; Naval Headlines, covering the Tirpitz putting to sea for exercises on May 28; Japanese reports that the Siamese Army is eager to fight, on May 7; a Portuguese report on conditions in Romania, on May 25; and a Turkish report from Vichy of the German ambassador's views on Franco-Italian relations, on May 26.