British philanthropist and politician who, in 1822, succeeded William Wilberforce as leader of the campaign in the House of Commons for the abolition of slavery in the British colonies and thus was partly responsible for the Abolition Act of Aug. 28, 1833.

A brother-in-law of the prison reformer Elizabeth Fry, Buxton, in 1818, published his own Inquiry into Prison Discipline, based on his inspection of Newgate Prison, London. In 1823 he joined Wilberforce and others in founding the British and Foreign Anti-Slavery Society. The ideas he expressed in The African Slave Trade and Its Remedy (1839) inspired the British government to send an expedition to the Niger River Delta in 1841. Intended to make anti-slave trade treaties with the peoples of the area, to engage in other kinds of trade, and to establish a missionary headquarters, the expedition suffered many deaths from fever and was soon recalled. Although Buxton did not accompany the group, his own health was permanently affected by the shock of the failure of the project. He was made a baronet in 1840.