Queen Elizabeth II was not officially informed for nearly a decade that Anthony Blunt was a Soviet spy, newly declassified documents reveal.

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

Sir Anthony Blunt, the surveyor of the Queen's pictures, confessed in 1964 that he had been a Russian agent since the 1930s, when he was recruited into the Cambridge spy ring