Morritt, a Yorkshire landowner and dilettante, offered himself for Beverley on a vacancy in 1799. He had Lord Yarborough’s interest and applied successfully for that of Sir Christopher Sykes, whom he assured that he would ‘certainly support administration’. Sykes warned him against the expense of contests at Beverley, but he defeated a Whig contender for the seat. In his address of thanks he defied ‘the efforts of an implacable enemy abroad, and of an unprincipled faction at home’. Although his first known minority vote was for Grey’s motion to safeguard the independence of Parliament following the Irish union, 25 Apr. 1800, he made a maiden speech on 2 May defending the ‘necessity and wisdom’ of the measure. Pitt applauded its ‘great good sense’.
Morritt was disappointed at his defeat in the election of 1802, when he decided that Yarborough’s interest at Beverley was not worth having. He had declined an opening at York to contest Beverley. He at once applied to Walter Spencer Stanhope for a possible opening on the Lonsdale interest which might arise from the ‘age and health’ of Lonsdale’s nominees. Nothing came of this or of a hint from William Wilberforce to Pitt on his behalf, though Pitt regretted his exclusion from the House.
Out of Parliament, Morritt devoted much time to his estates, his literary interests and his battalion of volunteers. In 1808 he befriended Walter Scott, who subsequently set a celebrated poem at Rokeby. In 1810 he published Advice to the Whigs, by an Englishman. Wilberforce had described him the year before as a warm friend of the government. In 1812 he lost £9,000 in the failure of Boldero’s bank.
In 1814, shortly after returning from a visit to France, Morritt was elected for Northallerton on Lord Lascelles’s interest, his mother’s family controlling the other seat.
In 1818 Morritt, whose name had been mentioned as a likely ministerial candidate for Yorkshire, transferred to a Dorset borough seat, on Lord Rosebery’s interest. He voted with ministers on the case of Wyndham Quin, 29 Mar. 1819, and against Tierney’s censure motion, 18 May. On 14 June he spoke in favour of quarantine regulations against plague, having been of the committee on it. He was also a member of the Poor Law committee, 1817-19. He was apparently an alarmist late in 1819, prepared to support coercive legislation against radicalism. Out of Parliament from 1820, he was ‘always forward and conspicuous in the ranks of Conservative politicians’. Since 1815 he had been a widower. He informed Wilberforce, 20 Apr. 1820, that he suffered from ‘lassitude and great mental anxiety’ which made him prone to seizures and made his standing for York out of the question.
Nicknamed ‘Troy’ Morritt because of his researches into the site of the ancient city, he was in the vanguard of the Hellenistic revival. He was a founder of the Travellers Club in 1819. Wilberforce described him as ‘cheerful, unassuming, full of anecdote and a good deal of knowledge—literary—of the old fashioned church of England religion ... Most kind to his family and friends.’
