[3] In 1806, Lushington entered Parliament as Whig member for Great Yarmouth, and spoke in the Commons in favour of the bill to abolish the slave trade in February 1807.
[16] The case was settled, with arbitration by Sir Samuel Shepherd, in March 1816, Lady Byron retaining custody of her daughter Ada Lovelace, and reaching a property settlement.
Lushington is considered to have let scandalous rumours about Byron proceed, by keeping back details of the points in his client's case, as a tactic.
[17] In 1820 Lushington was one of the counsel retained by Queen Caroline, and spoke in her defence during her trial before the House of Lords.
[22] He was the only committee member with relevant legal experience, and influenced the outcome, which overturned the verdict of the Court of Arches, given by Herbert Jenner-Fust, finding in favour of Gorham.
[23] Lushington argued in terms of process and expediency: Phillpotts was intending Gorham to fail his examination, itself unusual, before moving to a new living, and the precedent was dangerous for the Church.
[23] The Privy Council judgement was given on 8 March 1850, and over the summer of that year Gorham moved into his new living of Brampford Speke, a clear victory of evangelicals over the High churchmen of the Church of England.
[31] On his return to Parliament in 1821, Lushington supported William Wilberforce's call on the government to put pressure on countries still allowing the slave trade, and opposed relief for West Indian sugar estates.
Lecesne and John Escoffery were free people of colour expelled from Jamaica, and subsequently involved in a libel suit with George Wilson Bridges.
[33] Lushington argued in the House of Commons in an 1824 speech that they had been subject to discrimination based on skin colour detrimental to their constitutional rights.
[34] In March 1827, Lushington spoke in Parliament about a sermon given by Bridges in St Ann Parish, Jamaica against missionaries, and an attack on a mission house there.
[35] Fowell Buxton who was a member of parliament and Lushington took an interest in a bequest by Jane Mico that had been stuck for 200 years.
Mico University College in Jamaica still exists based on this gift and Lushington is one of the house names.
With Buxton, William Allen, Thomas Hodgkin and Richard King, Lushington was one of the leaders of the Aborigines' Protection Society.
[39] Lushington and his daughters were part of the group of abolitionists who supported the education of the fugitives Ellen and William Craft in the early 1850s.
[46] The American abolitionist Charles Sumner, who as a young man had taken Lushington to be "one of the ablest men in England", was a visitor there in 1857.