On 2 January 1807 The Prime Minister, Lord Grenville, threw all of his weight behind his Slave Trade Abolition Bill in the House of Lords, with a strong speech on morality.
The Bill was passed with an overwhelming majority by 100 votes to 34. By passing the Bill through the Lords, the bigger hurdle to abolition was crossed first - the Lords were understood to be more anti-abolition than the Commons. It then passed the Commons with 283 votes to 16. The Bill received Royal Assent on 25 March 1807.