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A pioneering British abolitionist society, this organization helped turn moral outrage into sustained political action. Its reports and publications capture the determined campaign that pushed slavery in the British Empire toward legal abolition.

by Society for the Mitigation and Gradual Abolition of Slavery Throughout the British Dominions
Founded in 1823, this British abolitionist organization is more commonly known as the Anti-Slavery Society. It was created to work for the mitigation and gradual abolition of slavery throughout the British dominions, building on earlier anti-slave-trade campaigns and helping keep abolition at the center of public debate.
The society became an important hub for organizing petitions, publishing reports, and rallying support for parliamentary action. Its work is closely linked with major abolitionist figures including William Wilberforce, Thomas Fowell Buxton, and Zachary Macaulay, and it contributed to the movement that led to the Slavery Abolition Act of 1833.
By 1838, after emancipation had been more fully carried into effect in the British Empire, the organization had effectively completed its original mission and ceased to exist in that form. It is remembered less as a single “author” in the usual sense than as a collective voice of the British abolition movement, and its surviving reports remain valuable records of how reformers argued, documented abuses, and pressed for change.