It's the best film I've seen all year - but then again it's the only one. Wilberforce was rather more dashing than real life portraits suggest, and there was a hint of Bob Geldof about his dishevelled looks at times. Was this a deliberate ploy to link the two at a subliminal level? But they are poles apart in the motivations that drive them, although Wilber's evangelical Christianity is not given emphasis by this film. Sadly, John Newton is also poorly portrayed. This is best redressed by reading his 'Letters' (Banner of Truth paperback edition available, hardback due April) or better still, the original 'Cardiphonia' or 'Utterance of the Heart' as it is now rendered in the Gospel Mission edition.
The lesson is simple - see the film, and then read the books. You won't regret it.