Slavery Abolition Act 1833: Ending Slavery in the British Empire

The Slavery Abolition Act 1833 was the law passed by the British Parliament that abolished slavery in most of the British Empire, freeing around 800,000 enslaved people of African descent, most of them in the Caribbean. It received Royal Assent on 28 August 1833 and took effect on 1 August 1834, but it imposed a period of unpaid “apprenticeship” on the formerly enslaved and paid 20 million pounds in compensation to slave owners, not to the people they had held in bondage.

Background: from the slave trade to slavery itself

Britain had been one of the largest carriers in the Atlantic slave trade, and its Caribbean sugar colonies depended entirely on enslaved labour. A national campaign led by the Society for Effecting the Abolition of the Slave Trade, founded in 1787, achieved the abolition of the British slave trade in 1807. Slavery itself, however, remained legal.

Many abolitionists had hoped that ending the trade would force planters to treat enslaved people better and lead gradually to freedom. When this did not happen, campaigners founded the Anti-Slavery Society in 1823, led in Parliament by Thomas Fowell Buxton with the support of the ageing William Wilberforce, Thomas Clarkson and Zachary Macaulay.

The campaign for immediate abolition

At first the society pursued gradual reform, and the government asked colonial assemblies to improve conditions. The planter-dominated assemblies largely refused. In 1824 the Leicester campaigner Elizabeth Heyrick published a pamphlet, Immediate, Not Gradual Abolition, and women’s anti-slavery associations played a growing part in boycotts of slave-grown sugar and in petitioning.

By the early 1830s a more radical Agency Committee sent paid lecturers around the country, and petitions bearing well over a million signatures reached Parliament. Nonconformist churches, especially Baptists and Methodists whose missionaries worked in the colonies, were central to the movement.

Testimony from people who had been enslaved also shaped opinion. The History of Mary Prince, published in London in 1831, was the first account of the life of a Black woman to be published in Britain. Its description of her treatment in Bermuda, Turks Island and Antigua was widely read and became the subject of two libel cases, keeping the cruelty of colonial slavery before the public while Parliament debated reform.

Resistance in the colonies

Enslaved people did not wait for Parliament. Revolts in Barbados in 1816 and Demerara in 1823 were put down with heavy loss of life. The largest came in Jamaica at Christmas 1831, when a Baptist deacon named Samuel Sharpe organised a strike that turned into a rising involving tens of thousands of enslaved people, with estimates ranging from about 20,000 to 60,000.

Known as the Baptist War or Christmas Rebellion, the rising was crushed within weeks. Around 14 white people were killed, while commonly cited figures put the deaths among the rebels at around 200 in the fighting and more than 300 executed afterwards. Sharpe was hanged in May 1832. Accounts of the reprisals, carried to Britain by missionaries, persuaded many that slavery could only be ended by law before still greater violence.

Passing the act

The Great Reform Act of 1832 reduced the number of pocket boroughs held by the West India interest and brought many MPs pledged to abolition into the Commons. In May 1833 the Colonial Secretary, Edward Stanley, introduced the government’s plan.

The bill was shaped by compromise with the planters. It passed its key Commons stage in late July 1833; William Wilberforce, who had been ill for some time, died on 29 July, shortly after hearing that its passage was assured. The act received Royal Assent on 28 August 1833.

What the act did

From 1 August 1834 slavery was abolished in the British Caribbean, British Guiana, British Honduras, Mauritius, the Cape Colony and Canada. Children under six were freed at once. Everyone older became an “apprentice”, obliged to work about 40 hours a week without pay for their former owners: until 1838 for domestic workers and 1840 for field workers. Antigua and Bermuda chose to skip apprenticeship and grant full freedom in 1834.

Owners received compensation of 20 million pounds, a sum equal to roughly 40 per cent of annual government spending. Much was raised through a government loan arranged in 1835, and the related debt was not finally redeemed until 2015. Payments went to tens of thousands of claimants, from absentee owners in Britain to small holders in the colonies, a record now studied through the University College London Legacies of British Slavery project. The formerly enslaved received nothing.

Apprenticeship and its end

Apprenticeship proved harsh. Special magistrates often sided with planters, and apprentices could be flogged or imprisoned for disobedience. Campaigners led by the Quaker Joseph Sturge exposed abuses, and under pressure from Britain the colonial assemblies ended apprenticeship for all on 1 August 1838. That day is commemorated in many Caribbean countries as Emancipation Day.

After emancipation

Freedom in 1838 did not bring equality. In many colonies planters controlled the land, charged rent for the cottages and provision grounds that freed people had long occupied, and used vagrancy and contract laws to keep labour cheap. Where land was available, as in Jamaica and British Guiana, tens of thousands of freed people left the estates to establish independent villages, often with help from Baptist and other missionaries.

To replace the labour they had lost, planters in British Guiana, Trinidad, Mauritius and elsewhere turned to indentured workers, above all from India. From 1838 until the system ended in 1917, over a million Indians travelled to British plantation colonies under indenture, changing the population of the Caribbean and the Indian Ocean islands.

Tensions over land, wages and justice continued. In 1865 the Morant Bay rebellion in Jamaica, led by the Baptist deacon Paul Bogle, was suppressed with great brutality by Governor Edward Eyre, provoking a fierce debate in Britain.

Myths and facts

A long-standing view presented abolition chiefly as the achievement of a few British parliamentarians such as Wilberforce. Historians now stress the combination of mass campaigning, including by women and Nonconformist congregations, changing economic interests, and above all the resistance of enslaved people themselves.

Another frequent claim is that British taxpayers were still paying off the compensation loan until 2015. The related government debt was indeed redeemed only in 2015, but it had been refinanced several times and merged with other borrowing, so the link to the original sum is real but indirect.

Timeline

• 1807, 25 March: The Slave Trade Act abolishes the British slave trade.
• 1823: The Anti-Slavery Society is founded; a major revolt breaks out in Demerara.
• 1824: Elizabeth Heyrick publishes Immediate, Not Gradual Abolition.
• 1831, 25 December: The Baptist War begins in western Jamaica.
• 1832, 23 May: Samuel Sharpe is executed in Montego Bay.
• 1833, 29 July: William Wilberforce dies in London.
• 1833, 28 August: The Slavery Abolition Act receives Royal Assent.
• 1834, 1 August: The act comes into force and apprenticeship begins.
• 1838, 1 August: Apprenticeship ends across the British colonies.

Why it matters

The Slavery Abolition Act ended legal slavery for hundreds of thousands of people and influenced abolition movements in the United States, France and beyond. Yet it also reflected the priorities of its time: owners were compensated as if for lost property, while those who had been enslaved received only a delayed and conditional freedom, a contrast that remains central to debates about the legacy of slavery.