Leigh was returned for Marlborough on the interest of his kinsman, the Earl of Ailesbury. Ailesbury’s son Lord Bruce wondered why he was given ‘preference’ and was reminded of ‘the circumstances attending his situation as great grandson to my uncle and lineal heir to this property’.
Leigh succeeded soon afterwards to his kinsfolk’s Stoneleigh estate, over 12,000 acres in that parish alone, with timber worth a million.
Since March 1818 Leigh had been Member for Winchester on the old Chandos interest revived by the Marquess of Buckingham. It was at first intended for his son, and then he was to have held the seat only until the dissolution, but he retained it until 1823, when he made way for his daughter’s father-in-law.
