On the death of their father the successful publisher
Longman contested Maidstone, ‘one of the centres of the paper-making industry’,
Longman was defeated in 1812 but regained his seat in 1818. Although he did not sign the requisition to Tierney to lead them, he again voted silently with opposition: for the inclusion of Brougham on the Bank committee, 8 Feb. 1819; against the Windsor establishment, 22, 25 Feb.; for a review of the criminal law, 2 Mar.; for Admiralty retrenchment, 18 Mar.; for Tierney’s censure motion, 18 May; against the public revenue proposals, 7 and 8 June; against the foreign enlistment bill, 10 June; in the minority on the cash payments bill, 14 June, and for parliamentary reform, 1 July. In the last session he voted steadily with opposition against repressive legislation from 24 Nov. until 6 Dec. 1819 and again from 16 to 22 Dec.
Longman retired in 1820 and died 23 Nov. 1822.
