 From 1800 to 1802 he was Solicitor General to the Prince of Wales (later King George IV).In 1805 he became a Baron of the Exchequer, which he remained until 1807.The latter year he was admitted to the Privy Council, raised to the peerage as Baron Manners, of Foston in the County of Lincoln, and appointed Lord Chancellor of Ireland, in which position he served until 1827.