Works in the house began again directed by the Ninth Earl. He followed the same scheme for the George Rooms as his great grandfather, although they would later be finished by the Tenth Earl. The Ninth Earl also travelled on the Grand Tour to purchase art with which to embellish the house, and employed Lancelot ‘Capability’ Brown to landscape the park and gardens, and level the roofline of the South front.

‘Capability’ Brown created a twenty-two-acre artificial lake of irregular outline, and used the spoil to create a small hill to the southeast of the house. He also designed and built the Lion Bridge before the lake was completed, and removed the entire northwest wing to open the view of his landscaped gardens. He built new stables and other essential offices on the east side of the house, and the Orangery on the southeast.

A ‘home farm’ replaced the tenant farmers' lands close to the house, which had provided it with food in the Sixteenth and Seventeenth centuries. Only the deer park remained close to the house.