“What we are seeing in A United Kingdom is a reflection of the country we live in,” he said.
• A United Kingdom opens the London film festival on Wednesday 5 October, and goes on release on 25 November in the UK.
A United Kingdom tells the story of Khama’s courtship of and marriage to British office clerk Ruth Williams in 1947, in the teeth of widespread social disapproval and international diplomatic scandal.
Khama was the son of the king of the Bamangwato people, in what was then the British protectorate of Bechuanaland.