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 BONIFACE report for Mr Loxley; a BONIFACE report for the Deputy Prime Minister (PM); a BONIFACE report from the Code and Cypher School (CSS) to Hut 3 signalled to the PM as SLICK 23; a BONIFACE/SUNSET report from the CSS to Hut 3 signalled to the PM as SLICK 24; on Southern Europe: the 51st Mountain Corps' day report for January 8 which includes an Allied air attack on Lucca; of Allied fighter-bomber attacks on Oneglia harbour on January 7; two 2nd air Fleet reports on Allied intentions, on January 7; and of damage caused to the Grosseto railway by an Allied air raid on January 8; on South-east Europe: two reports on operations against the Dalmatian islands of Brac and Solta which are to be carried out under the Ground Officer Commanding (GOC) the 118th Jaeger Division, and reconnaissance against Brac which is to be carried out by January 8-9, on January 7 and 8; that the strengthening of Bulgarian fighter forces is at present the most urgent task in south-east Europe, according to Hitler's order; two reports concerning orders for concentrated air attacks, lasting several days, against supply roads and the supply bases of Tito's forces; and on the Russian Front: of Russian tanks being sighted 15 miles south-east of Vinnitsa on January 8.