Hull MP William Wilberforce was persuaded to campaign against the slave trade in the Houses of Parliament and on 25 March 1887 introduced the law that banned the slave trade.
Thomas Clarkson was one of the men who persuaded Wilberforce to take up the cause. Clarkson rode some 35,000 miles spreading the anti-slavery message in England.
Former slave Olaudah Equiano published a best-selling book about his life, which helped gain support for the anti-slave trade. He was sold into the slave trade when he was 11.
Toussant Louvreture was a well-liked former slave who managed to persuade the French government to formally free all slaves across the French empire.