Confessions of double agents and tips for new spies have been released as part of a tranche of recently-declassified ...

MI5’s top interrogator was baffled by Kim Philby, admitting he could not determine whether he was a Soviet spy, according to ...

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

As new documents reveal fascinating new details about the infamous MI6 double agent Kim Philby and his betrayals, Mark ...

Top secret MI5 files detailing first-hand accounts of confessions of ... seen as the Cambridge Five's ringleader and who became a senior figure in Britain's foreign spy agency MI6, in which he finally ...

MI5 documents reveal her private secretary ‘saw no advantage in telling her’ about treachery of Buckingham Palace art expert ...

The British secret service has declassified new documents about the famous spy who ended up fleeing to Moscow, where he died ...

A former member of the highly secretive British Military Intelligence is publishing his debut novel, A Pansy Resting on its ...

MI5 reveals confessions of three members of infamous Cambridge Five spy ring as tranche of documents released into National ...

Documents circulating on social media claiming Syria's former first lady Asma al-Assad was a spy for British intelligence ...

Historian Christopher Andrew says in the official history of MI5 that the queen had previously ... continued to work for foreign intelligence agency MI6 despite falling under suspicion.