The missionary had as much influence on the British Empire as the politician and the soldier; his achievements may well prove more durable. Today, as a result of his success, the great majority of practising Anglicans are black - they are Africans, Indians and West Indians, spread across six continents. Over the last 30 years this challenge - of a multi-racial English church - has come home. How has the Church, so successful at foreign missionary work, reacted to it? Using little-known archive footage, this film traces the story of black Christians and the Church in Britain.