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.

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.

Newly declassified documents show she wasn’t told of her longtime art adviser's double life as a spy because officials didn’t want to add to her worries.

Confessions of double agents and tips for new spies have been released as part of a tranche of recently-declassified documents from MI5. The documents are part of a new exhibition on display at the National Archives this spring and include details about some of Britain's most notorious spies.

Papers released by MI5 show that although Blunt confessed to them he had ... after when his fellow spies Guy Burgess and Donald Maclean fled to the Soviet Union. He had been a close friend of Burgess since their time at Cambridge together in the 1930s ...

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.

Historian Christopher Andrew says in the official history of MI5 that the queen had previously ... whose members spilled secrets to the Soviet Union from the heart of the U.K. intelligence ...

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.

The British defense secretary told Parliament that the Yantar, which he described as a Russian spy ship, had come near Britain’s coast for the second time in a few months.