The Slavery Abolition Act 1833 (3 & 4 Will. 4. c. 73) was an act of the Parliament of the United Kingdom which abolished slavery in the British Empire by way of compensated emancipation. The act was legislated by Whig Prime Minister Charles Grey, 2nd Earl Grey's reforming administration, and it was enacted by ordering the British government to purchase the freedom of all slaves in the British Empire, and by outlawing the further practice of slavery in the British Empire.
However it was not until 1937 that the trade of slaves was abolished throughout the entirety of the British Empire, with Nigeria and Bahrain being the last British territories to abolish slavery.
The act was technically repealed in 1998 as part of a restructuring of the entirety of English statute law, though slavery remains abolished.
Background
Slavery had been abolished in England by 1772. In May 1772, Lord Mansfield's judgment in the Somerset case emancipated a slave who had been brought to England from Boston in the Province of Massachusetts Bay, and thus helped launch the movement to abolish slavery...