The leader in the british abolition movement was

The leader in the British abolition movement was William Wilberforce.

Explanation:

William Wilberforce was an English politician, philanthropist and abolitionist, who, being a member of the British Parliament, led a campaign against slavery. He proposed a bill to the House of Commons to eliminate slavery in 1791. And since then he defended the abolitionist project until 1807, the year in which his bill was approved by the British Parliament.

The abolitionist Thomas Clarkson had a huge influence on Wilberforce. He and others began the campaigns to put an end to the trade of British ships that transported black slaves from Africa, in terrible conditions, to the West Indies as merchandise that was bought and sold. Wilberforce was persuaded to exert pressure for the abolition of the slave trade, and for 18 years he regularly submitted anti-slavery motions in parliament.

In 1807, the slave trade was finally abolished, but this did not free those who were already slaves. It was not until 1833 when an act was passed to give freedom to all slaves in the British Empire.

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