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

Sir Anthony Blunt, the Royal Family's picture surveyor and renowned art historian, finally admitted that he had been a Soviet ...

Five Cambridge University graduates served as double agents, leaking highly classified information to the Soviet Union ...

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.

Newly declassified British documents show that Queen Elizabeth II wasn’t told details of her long-time art adviser's double life as a Soviet spy because palace officials didn’t want to add to her ...

The files confirm that Philby recruited Donald Maclean in 1934, and how Guy Burgess, Anthony Blunt and the fifth spy, John Cairncross, agreed to work for Russian intelligence soon afterwards.

(PA via AP, File) FILE - clockwise from top left, Anthony Blunt, Guy Burgess (who died in Moscow in 1963), Donald MacLean and Kim Philby, who tipped off Burgess and MacLean in 1951 forcing them to ...

Philby and Blunt were, along with Guy Burgess, Donald Maclean and John Cairncross, part of the "Ring of Five" - former Cambridge University students who passed information to the Soviets from the ...

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.