David Oyelowo and Rosamund Pike star in the true story of a scandalous love affair between an African king and a white Englishwoman.

Based on the inspirational true-life romance between Botswanan King Seretse Khama (David Oyelowo) and his British wife, Ruth Williams Khama (Rosamund Pike), A United Kingdom is a British period piece set in the 1940s.

Their interracial union faced fierce opposition from their families and the British government, the tribal elders of Botswana and the apartheid government of South Africa.

The film concentrates on the couple’s journey as they move to Bechuanaland (modern-day Botswana) and face similar obstacles of racism while Seretse tries to convince his people and the British government that he should be king, and that his marriage to a white woman is a separate matter of personal choice.

Amma Asante, who also directed Belle, beautifully captures this defiant and enduring love story while shining a light on a complex and painful chapter in British history.

The Khamas’ son, Ian Khama, is currently the democratically elected president of Botswana, and the family cooperated in the making of this film.

A United Kingdom will be in cinemas from Thursday 26 December. Thanks to Transmission Films, we’ve got 25 in-season double passes to give away — enter now for your chance to win!

HOW TO ENTER: Enter via the form below. *Entrants agree to receive future promotional offers from Bmag. This prize is not redeemable for cash and cannot be transferred. Competition closes 9am, Monday 12 December. UPDATE: This competition has closed. Congratulations to our winners — Wendy Welsh, Sally Purbrick-Illek, Harry Cornish, Lorna Hughes, Raylene Visser, Lynette Catchlove, Barbara Caldarola, Sharon Hooker, Patricia Parlane, Isabelle Bornaghi, Brett Clarke, Nancy Conaghan, Margaret McNee, Melanie Fernee, Hellen Meland, Jill Walton, Cheryl Keasley, Wwgary Pardella, Susan Scott, Caitlin Mullins, Kylie McAndrew, Contessa La-Mont, Kaikeek Parakh, Terence Kelly and Liam Moore!