Queen Elizabeth II 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.
In 1964, Sir Anthony Blunt, the surveyor of the Queen’s pictures and distinguished art historian, finally confessed he had been a Soviet agent since the 1930s having been recruited, when he was a young don at Cambridge, into one of the most notorious spy rings of the 20th century.
