Benson’s father, whose early mercantile activities probably included slave-trading, was considered one of the old ‘merchant princes’ of Liverpool, with at least seven ships registered to him by 1788.
Returned for the venal borough of Stafford in 1812, after an abortive attempt in 1807, Benson had given general support to the Liverpool ministry. He did not stand again in 1818, when he supported Canning at Liverpool and was one of the shadow candidates nominated to safeguard his position.
Benson voted against Catholic relief, 6 Mar. 1827, 12 May 1828. He probably supported Canning’s brief ministry, referring to him in the House as his ‘late lamented friend’, 10 Apr. 1829. In February 1829 Planta, the Wellington ministry’s patronage secretary, forecast that he would vote ‘with government’ for Catholic emancipation and although he voted silently against it, 6 Mar., he did endorse a favourable petition from Staffordshire, 9 Mar., and declare his ‘most hearty and cordial assent’ to a ‘conciliatory measure’ which would bring ‘peace and tranquillity in Ireland’ and ‘end all discontent’, 17 Mar. Yet he apparently abstained on the third reading, 30 Mar. He spoke in support of the Spanish claims bill, 10 Apr., the customs duties bill, 28 May 1829, and the forgery bill, 1 Apr. 1830. He presented petitions from Bicester in favour of the Warwick and Northampton canal bill, 30 Mar., from Leamington against child employment, 16 Apr. 1829, and from his constituents against the Stafford improvement bill, 5 Apr. 1830, when he moved its second reading. Taking his cue from the county Member Edward Littleton, he argued for cheaper turnpikes, 26 Feb. 1829, and on 1 Apr. 1830 he introduced a bill to revise the regulations governing payment of wages in kind. On 6 May he was added to the select committee on the bill, which foundered at its report stage, 9 July. He voted against the transfer of East Retford’s seats to Birmingham, 11 Feb., and Lord Blandford’s parliamentary reform plan, 18 Feb. On 11 Mar. he launched a vociferous campaign on behalf of people who had been fraudulently entered as subscribers to the London and Birmingham canal and he was instrumental in having the Company’s solicitor officially reprimanded, 20 May.
Benson’s decision to retire at the 1830 dissolution was probably owing to financial difficulties. Although it was considered normal in Stafford ‘that the money is not paid for two years’, Benson had yet to pay ‘one iota’ by 1830 and as a result dared ‘not show his face there’.
