Miles’s father, the eldest son of Robert Miles (d. 1737) of Ledbury, Herefordshire, went early in life to Jamaica, where he prospered. On his return to England he settled in Bristol, set up in business as a West India merchant and acquired a house at Clifton.
Miles became a Merchant Venturer in 1795, but declined to serve on the corporation the following year.
Miles made no mark in the House, where he is not known to have spoken in this period. He gave general support to the Liverpool ministry when present, but was a lax attender. He voted in defence of their conduct towards Queen Caroline, 6 Feb., and against parliamentary reform, 9 May 1821, but cast a wayward vote for abolition of one of the joint-postmasterships, 13 Mar. 1822. It is not clear whether it was he or Charles Mills who voted for investigation of the Calcutta bankers’ claims on the East India Company, 4 July 1822. He divided with government against parliamentary reform, 20 Feb., repeal of the assessed taxes, 18 Mar., and of the Foreign Enlistment Act, 16 Apr., and inquiry into chancery administration, 5 June 1823. His only known vote in 1824 was against reform of Edinburgh’s representative system, 26 Feb., which he again opposed, 13 Apr. 1826. He divided against Catholic relief, 30 Apr. 1822, 1 Mar., 21 Apr., and the Irish franchise bill, 26 Apr. 1825. He was in the ministerial majority on the Jamaican slave trials, 2 Mar. 1826.
Miles did not find a seat in 1826, but in March 1829 he was returned on the Bond interest for Corfe Castle, where he sat until it was disfranchised. His four votes that month against the Wellington ministry’s policy of Catholic emancipation, which he was brought in to oppose, are the only traces which have been found of his activity in this Parliament. He took a month’s leave to attend to urgent private business, 9 Mar. 1830. After the general election that year ministers numbered him among the ‘moderate Ultras’ who were essentially ‘friends’, but, like his son William, who had now returned to the Commons, he failed to rally to them on the civil list, 15 Nov. 1830. The Grey ministry’s reform bill returned him to his former allegiance, and he voted against the second reading, 22 Mar., and for Gascoyne’s wrecking amendment, 19 Apr. 1831. He divided against the second reading of the reintroduced bill, 6 July, and was in the minorities against the partial disfranchisement of Chippenham, 27 July, the third reading, 19 Sept., and the passage of the bill, 21 Sept. 1831. His only known votes against the revised reform bill were against the enfranchisement of Tower Hamlets, 28 Feb., and the third reading, 22 Mar. 1832. He voted against the second reading of the Irish bill, 25 May. He divided against government on the Russian-Dutch loan, 26 Jan., 12 July 1832.
Miles re-entered Parliament as Conservative Member for Bristol in 1835, and was replaced on his retirement in 1837 by his second son Philip William Skynner Miles (1816-81). In 1833 he bought the De Clifford estate at Kings Weston on the edge of Bristol for £210,000, and he formed ‘a most celebrated collection’ of pictures at Leigh Court.
