Art historian AnthonyBlunt 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 the 1930s.
In 1964, Sir AnthonyBlunt, the surveyor of the Queen ... Miranda Carter, who wrote a 2001 biography of Blunt, said she believed the Queen would have been told informally some time after 1965.