1913 – John Cairncross was born on the 25th of July in Scotland.
1936 – Cairncross joined the Foreign Office.
1937 – He joined the Communist party.
1942 – He worked on ciphers at Bletchley Park and MI6.
– He recruited by Anthony Blunt to pass British secrets to Soviet Union, as Fifth Man of Kim Philby spy ring.
1951 – He discovered by British government but avoided prosecution by revealing information about Soviet operations
– Cairncross worked for the United Nations Food and Agricultural Organization in Rome.
1995 – He died aged 82 on the 8th of October.