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.

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

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 was left in the dark for almost a decade over the full scale of the treachery of one of her most senior courtiers, according to newly-released official files

The identity of a Russian spy among Queen Elizabeth II's courtiers was kept from the monarch for almost a decade, but she took the news with her typically calm demeanour

Art historian Anthony Blunt was for decades Surveyor of the Queen's Pictures, overseeing the official Royal Art Collection, and in 1964 admitted he had been a Soviet agent since t

Queen Elizabeth II was not told officially for nearly a decade that one of her most senior courtiers had admitted he was a Soviet spy, newly declassified British files revealed Tuesday.