In the East India Company service Benn, a protégé through his guardian uncle Dr William Brownrigg of John Robinson I, made about £80,000 in ‘presents’ at Benares as assistant to Francis Fowke, whose sister he married with a dowry of £10,000, and in opium contracts for the Company’s China trade.
He was not a conspicuous Member. On 24 Mar. 1803 he took a month’s leave for health reasons after serving on the Nottingham election committee and on 9 Feb. 1804 the House was informed that a ‘cholera morbus’ had prevented his attending the Middlesex election committee. After Addington’s fall he was listed ‘doubtful etc.’ by Pitt’s friends, but the success of Addington’s application for a baronetcy for him removed all doubts. In a grateful letter to Addington, 14 May 1804, he deplored the loss of ‘your enlightened, mild and constitutional administration’ and added ‘I hope you will continue to place me in the number of those, who are most faithfully attached to your interests’.
