All news on the topic: Kim Philby

Britain’s spy chiefs had to initiate one of the most sensitive and risky investigations since the Cold War due to concerns that a senior officer at the foreign intelligence service MI6 was a double agent for Russia.

Biographer James Hanning tells of his fascination with Kim Philby, who was played by Guy Pearce in the ITV series A Spy Among Friends. He spied for the Russians while working as a British secret agent