Cox, a London merchant, bought an estate near Dorchester, and in 1768 unsuccessfully contested the borough. He did not again attempt a Dorset constituency, but in 1774 stood for Honiton where he was a ‘perfect stranger’, and was returned after a contest said to have cost him £5,000.
He was knighted 6 Sept. 1786, and died 26 Aug. 1792.
