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

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

Newly declassified British documents show that Queen Elizabeth II wasn’t told details of her long-time art adviser's double ...

The documents reveal fascinating new details about the infamous MI6 double agent Kim Philby and his betrayals. Recommended MI5 ‘missed chance to expose Soviet spy Kim Philby decade sooner’ A ...

A third, Kim Philby, continued to work for foreign intelligence agency MI6 despite falling under suspicion. As evidence of his duplicity mounted, he was confronted in Beirut in January 1963 by his ...