A closer look at recently declassified MI5 files on the intelligence failure surrounding the five "Cambrdige spies" ...

Former aide of late Queen Elizabeth II, Anthony Blunt, worked as spy for the Russia for almost 10 years without the queen knowing about it.

Two of the Cambridge spies, Donald Maclean and Guy Burgess, fled to Russia in 1951. A third, Kim Philby, continued to work for foreign intelligence agency MI6 despite falling under suspicion.

Two of the Cambridge spies, Donald Maclean and Guy Burgess, fled to Russia in 1951. A third, Kim Philby, continued to work for foreign intelligence agency MI6 despite falling under suspicion. As ...

Kim Philby was the quintessential spy ... when he refused to join his fellow spies Burgess and Maclean and flee to Russia. Cairncross, the last of the spy ring to be publicly identified in ...

Kim Philby was the quintessential spy ... KGB handler would turn violent when he refused to join his fellow spies Burgess and Maclean and flee to Russia. Cairncross, the last of the spy ring to be ...