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In 1947, Seretse Khama, the King of Botswana, met Ruth Williams, a London office worker. They were a perfect match, yet their proposed marriage was challenged not only by their families but by the British and South African governments and sparked international divisions. 

Tickets cost £4 for adults and £2 for under 18s, and are available online or in advance from Watts Trading or on the door if not already sold out.