On the death in 1804 of his younger brother John, co-founder in 1796 of the Whig-Tory, Derby-Horrocks electoral coalition, Horrocks, an anti-Catholic Tory, had become the senior partner in the family cotton firm and Member for Preston, where he was the largest employer and an influential member of the corporation. His ‘silence’ in the House was ridiculed by his local opponents, but he had successfully defended his seat at great expense at each subsequent election.
Horrocks, who was granted a fortnight’s leave on urgent private business, 4 July 1820, and a further six weeks, 9 Apr. 1821, when strikes and lay-offs closed his spinning factories, remained an important figure locally, but an insignificant one in Parliament, where his only reported speech was a brief defence of the Lancashire magistracy’s treatment of Hunt and conditions in Lancaster gaol, 25 Feb. 1822.
