The newly-declassified documents include details about some of the UK's most notorious spies.

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

Anthony Blunt, a royal art historial, confessed in 1964 to spying for the Soviets, but the late queen was not officially told ...

Members of the spy ring in the 1930s spilled secrets to the Soviet Union from the heart of the U.K. intelligence establishment.

Trove of newly declassified files detail investigations into some of country’s most notorious double agents the ‘Ring of Five’ who passed information to Soviets for three decades ...

LONDON - Top secret MI5 files detailing first-hand accounts of confessions of three of Britain's most notorious double agents ...

Queen Elizabeth II was not told about her long-time art adviser's double life as a Soviet spy, newly declassified documents ...

Queen Elizabeth II wasn’t told details of her long-time art adviser's double life as a Soviet spy because palace officials ...

Recently declassified MI5 files have shed light on one of the most infamous chapters in Cold War espionage, revealing ...

The members of the ring were Donald Maclean (1913 - 1983 ... NKVD (later KGB), the Soviet security agency. While teaching at Cambridge University, Blunt was influential in recruiting the other ...

Newly-declassified files show notorious double agent refused ‘insane’ order to follow fellow spies Burgess and Maclean to ...