 The estate remained in the Londonderry family until 1987, though it was let as a training school for teachers from 1945 until 1960, during which time it lost most of its original contents through sales and breakages.The estate was sold in 1987 to Sir John Hall, along with .Hall spent £4,000,000 to restore the house, hiring Rupert Lord to oversee the restoration; he later moved his company headquarters, as well as his home, into the mansion.