Archbishop Desmond Tutu has spent a lifetime fighting injustice in South Africa and other parts of the world. It won him a Nobel Peace Prize. In this frank and moving interview for the lead up to Christmas, he tells Fern Britton he is not an optimist, but a prisoner of hope. He also gives her a unique insight into his ideas about God; he says that he never doubted that this was an omnipotent God, but when he meets him, he will certainly ask, 'Why is it that you test us, couldn't you think of a better way?'.