[1] Moore returned to England a rich man, supplied material to Edmund Burke and Richard Brinsley Sheridan for their attack on Warren Hastings.
[1] In 1796, Moore himself stood as parliamentary candidate for Tewkesbury, with Sir Philip Francis, and they obtained a majority of the householders in their favour; but were unseated on the House of Commons resolving that the free men and freeholders alone had a right to vote.
He continued in opposition, and frequently spoke in the house, supported Samuel Romilly and other advanced Whigs, and in 1807 voted in a minority of ten against the Duke of Wellington's Irish Insurrection Bill.
He was also noted as promoter of the rebuilding of Drury Lane Theatre, where he served for some time on the management committee, the Highgate tunnel, and the floating of the Imperial Gas Light Company.
He gave up nearly all his property for the benefit of persons who had lost money in companies with which he was associated, and spent the remainder of his days in writing memoirs, which remained unpublished.