New A UNITED KINGDOM Trailer Watch the new A UNITED KINGDOM trailer! The film, directed by Amma Asante (Belle), stars Rosamund Pike, David Oyelowo, Tom Felton, and Jack Davenport. A UNITED KINGDOM will be released in theaters on February 17. Prince Seretse Khama of Botswana causes an international stir when he marries a white woman from London in the late 1940s.