 On her death it passed in turn to their son Marcus Wickham Boynton, who operated a successful stud farm on the estate for many years and was High Sheriff of Yorkshire for 1953–54.He died in 1989 and left the property to a distant cousin, Simon Cunliffe-Lister, then aged twelve, grandson of Viscount Whitelaw and son of the 3rd Earl of Swinton.Today, the estate is owned by the Burton Agnes Preservation Trust and is managed by Cunliffe-Lister and his mother, the Hon.