The Sunday Times, 

Series three of The Crown dropped yesterday on Netflix, covering the years from 1964 to 1977. Once again, its big theme is the familiar one of cold duty over human love: the monarchy, represented by Olivia Colman as the Queen, is shown as contained and formal, in contrast to the Duke of Windsor, who put love first, and Prince Charles, who contemplates doing the same. Facts have sometimes been twisted into fiction. Here is what to look out for.

Harold Wilson was suspected of spying for the KGB
Harold Wilson becomes prime minister in 1964 after 13 years of Conservative government and there are rumours that he is a KGB spy. The Queen appears to know this, making their first audience together particularly awkward.

TRUE