Peach was descended from one of the leading clothier families of the Stroud valleys. His father, the son of Benjamin Peach of Westbury, was in partnership with John Ridley of Rooksmore, but following his death in 1788, at the age of 39, his capital and stock in trade in the business were withdrawn over a period of three years, according to his instructions. The estate was left unadministered and a fresh grant of probate was made to Peach, the residuary legatee, in 1809.
He was apparently a silent Member. He divided against Catholic relief, 12 May 1828. In February 1829 Planta, the patronage secretary, listed him as one who was ‘opposed to the principle’ of Catholic emancipation. Shortly afterwards he transferred to Lord Falmouth’s borough of Truro to replace a supporter of concession.
The ministry regarded Peach as one of the ‘violent Ultras’, and he was absent from the crucial division on the civil list, 15 Nov. 1830. Opposition to the Grey ministry’s reform bill restored him to his old allegiance. He divided against the second reading, 22 Mar., and for Gascoyne’s wrecking amendment, 19 Apr. 1831. He came in again for Truro at the ensuing general election, after a token contest. He voted against the second reading of the reintroduced reform bill, 6 July, and at least twice for adjournment motions, 12 July. He divided against the bill’s passage, 21 Sept., and the second reading of the Scottish bill, 23 Sept. He was named as a defaulter prior to the division on Lord Ebrington’s confidence motion, 10 Oct. That autumn he played an active part on the opposition side in the Dorset by-election.
Peach, who was a member of the committee formed by the Conservatives in May 1832 to manage the forthcoming elections in England, stood for East Norfolk in December, when he made a point of attacking the government’s aggressive policy towards Holland. He and his colleague were defeated by two Liberals.
