B uckingham Palace is braced to defend King Charles when Netflix airs The Crown this autumn and offers a potentially explosive dramatisation of his relationship with ex wife Diana. A Firm insider told reporters on Sunday that viewers need to remember the drama series is “not a documentary,” when the 10-part saga, which charts the royal characters, returns from November 9. It is the first series to air since the death of Queen Elizabeth II. A YouGov survey has found approval ratings for King Charles have soared since he took the crown. When asked ‘Will Charles make a good king?’...