This film is set during the last days of Henry VIII (1546-7), with Jude Law as the King and Alicia Vikander as his sixth and last wife, Catherine Parr, who was also mother in all but name to the king's three children (only one of whom ever knew their actual mother).
The film starts with a caption which says (I forget the exact words) that there are always gaps in our knowledge of history, which we often fill with things we've made up. Well there aren't quite so many gaps as this film seems to suggest. The ending is entirely fictional, and there's at least one plot point that's total fabrication.
Does this matter, given that they were open with us? Probably not. Law is excellent as the sick, dying and paranoid king. Vikander is also excellent as the woman who must constantly tread a microscopically thin line between giving the king the support and affection he needs and becoming the third of his wives to be executed. Simon Russell Beale radiates oily menace as the odious Bishop Gardiner, and the rest of the ensemble cast do a good job in portraying a court torn between jockeying for advancement and fearful of provoking one of the king's irrational outbursts.
I do have one issue with the film: in an early scene we see Erin Doherty as Anne Askew the religious reformer (or radical, depending on your point of view) preaching to her followers in the woods. This is a dramatic and moving scene, and one hopes that Askew is going to feature prominently. She doesn't. Less than two minutes later we learn that Askew has been arrested, tortured and burned at the stake. We see nothing of this, which struck me as a missed opportunity.
That aside, we get a moving and dramatic film which skirts round the edge of actual history.
Oh; and if a King writes a song, of *course* the whole court will learn the words.