Anthony Blunt, who worked at Buckingham Palace as Surveyor of the Queen’s Pictures, was secretly a Soviet spy during WWII.

Documents newly declassified by MI5, Britain's internal intelligence agency, show the late Queen Elizabeth II was not informed for almost 10 years that a member of her staff had spied for the then-Soviet Union.

Queen Elizabeth II was kept in the dark about her art advisor being a Russian spy to avoid adding to her worries. Blunt confessed to spying for the Soviet Union in 1964 but kept his job and knighthood until his role was publicly revealed in 1979 by Prime Minister Margaret Thatcher.

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

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 worries.

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 worries, newly declassified documents reveal.

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 worries, newly declassified documents reveal.

Queen Elizabeth II wasn't told details of her long-time art ... Anthony Blunt are among a trove from the intelligence agency MI5 released Tuesday by Britain's National Archives.

Sir Anthony Blunt, the Royal Family's picture surveyor and renowned art historian, finally admitted that he had been a Soviet agent since the 1930s.

New archival material released in the UK have revealed some unexpected details about one of the biggest spy scandals connected to the British Royal Family. Files newly released by the UK spy agency MI5 show that Queen Elizabeth the Second wasn’t told details of her long-time art adviser Sir

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

The Duke of York, 64, was seen smiling as he headed out for a morning ride on his horse in Windsor for the first time since early December last year.