This year marks the 200th annaversary of the Slave Trade Act which abolished slave trade in the British empire.
In commenoration of this a film has been made about William Willberforce. Here's the description for the film:
Amazing Grace is based on the true story of William Wilberforce, a British statesman and reformer from the early part of the 19th century. This feature film chronicles his extraordinary contributions to the world, primarily his 20-year fight to abolish the British slave trade, which he won in 1807. Wilberforce was also instrumental in passing legislation to abolish slavery in the British colonies, a victory he won just three days before his death in 1833.