British secret intelligence did not tell Queen Elizabeth II that her royal art adviser confessed to spying for the Soviet Union for almost a decade, according to newly released documents. The revelations come from a large tranche of documents made public by British intelligence service MI5 on Tuesday.

The files about royal art historian Anthony Blunt are among a trove from the ... whose members spilled secrets to the Soviet Union from the heart of the U.K. intelligence establishment.

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

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

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.

The files about royal art historian Anthony Blunt are among a trove from the ... whose members spilled secrets to the Soviet Union from the heart of the U.K. intelligence establishment.

Top secret MI5 files detailing first-hand accounts of confessions of three of Britain's most notorious double agents including Kim Philby and Anthony Blunt who spied for the Soviet Union were released for the first time on Tuesday.