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: Naval Headlines for June 19, with a query by the Prime Minister (PM) over an occupation of Corfu by the Allies if the Germans evacuated the island; on Western Europe: a tank return for the 1st SS Panzer Corps for June 15, totalling 265 tanks of which 79 were under repair; and a query from the PM to the Chief of the Imperial General Staff (CIGS) concerning German Corps and division strengths.