Guest’s family had been farmers in Shropshire until the mid-eighteenth century, when his grandfather John Guest moved to Merthyr Tydvil, where he became the manager of, and later a partner in, the Dowlais iron works. His father also managed the company and on his death in 1807 Guest inherited his freehold property, a one-sixteenth share in Dowlais and a one-fifth share of the residue.
He acted with the Whig opposition to Lord Liverpool’s ministry, voting against the duke of Clarence’s annuity bill, 2 Mar., for a reduced level of agricultural protection, 9 Mar., inquiry into Leicester’s corporation, 15 Mar., and inquiry into the Irish miscellaneous estimates and information regarding delays in chancery, 5 Apr. 1827. He divided for Catholic relief, 6 Mar. He was granted ten days’ leave for urgent business, 19 Mar. He voted against Canning’s ministry to disfranchise Penryn, 28 May 1827. He joined Brooks’s Club, 6 Feb. 1828. He opposed the duke of Wellington’s ministry by dividing against the grant for 30,000 seamen, 11 Feb., to postpone the grant to the Society for Propagating the Gospels in the colonies, 6 June, and reduce civil list pensions, 10 June. He voted against the grant for the Royal Cork Institution, 20 June, and to condemn the misapplication of public money for work on Buckingham House, 23 June. He presented several petitions for repeal of the Test Acts and voted accordingly, 26 Feb. He divided for Catholic claims, 12 May. He voted for a lower pivot price for the corn duties, 22 Apr., and a 15s. duty, 29 Apr. He voted against going into committee on the small notes (Ireland and Scotland) bill, 16 June 1828. He divided with the ministry for Catholic emancipation, 6, 30 Mar. 1829, and presented several favourable petitions. He obtained a second reading for the Merthyr magistrates bill, 13 Mar., which received royal assent, 1 June. He introduced a bill to establish a corn market at New Ross, county Wexford, 13 Mar.; it was committed but made no further progress. He voted for Lord Blandford’s reform scheme, 2 June, and Hume’s proposed table of fees in the ecclesiastical courts bill, 5 June 1829. He divided for Knatchbull’s amendment to the address on distress, 4 Feb., and tax reductions, 15 Feb. 1830, and steadily in the revived opposition’s campaign for retrenchment that session. He voted to transfer East Retford’s seats to Birmingham, 11 Feb., and enfranchise Birmingham, Leeds and Manchester, 23 Feb., and paired for Russell’s reform motion, 28 May. He was granted one month’s leave for urgent private business, 3 Mar. He voted to abolish the Irish lord lieutenancy, 11 May, and for Labouchere’s motion on the civil government of Canada, 25 May. He presented a Honiton petition to abolish the death penalty for forgery, 25 May, and paired in this sense, 7 June. He voted for reform of the divorce laws, 3 June 1830. At the general election that summer he was returned unopposed for Honiton after declaring that he had done his utmost to ‘stem the torrent of corruption and extravagance’ and reduce taxation, and that his aim was to ‘secure the stability of our free institutions’.
The ministry of course listed Guest among their ‘foes’, and he voted against them in the crucial civil list division, 15 Nov. 1830. He presented a Merthyr ironworkers’ petition for repeal of the corn laws, 19 Nov. 1830, one from Honiton for repeal of the coal duty, 7 Feb. 1831, and several that winter for the abolition of slavery. On 23 Dec. 1830 he drew attention to the ‘great number of abuses’ in the system of granting civil list pensions and maintained that they could only be awarded for the monarch’s lifetime, unless renewed by Parliament, and that they should only be given for ‘actual [public] service’. His motion for an address to the king for the production of the warrant authorizing the pension to Harriet Arbuthnot, the wife of a Tory ex-minister, was agreed. John Charles Herries* informed Mrs. Arbuthnot that the motion had taken the opposition ‘somewhat by surprise’.
Guest had been the principal speaker at a public meeting in Merthyr, 8 Apr. 1831, when he had called for the town’s enfranchisement, and he was involved in the subsequent campaign for this objective which was achieved in March 1832. He immediately announced his intention of offering for the new borough, and he was returned unopposed in December 1832 as ‘a reformer ... in favour of free trade, a revision of the corn laws, the abolition of monopolies, the ballot and a commutation of tithes’. His position as a large employer enabled him to exercise ‘a kind of industrial feudalism’ at Merthyr and by the 1840s he was described as ‘a Whig’.
