In 1988 he inherited from his aunt Dorothy de Rothschild, the Waddesdon and Eythrope estates in Buckinghamshire, and began a close association with Waddesdon Manor, the house and grounds which were built by Baron Ferdinand de Rothschild in the 1880s and bequeathed to the National Trust in 1957 by his cousin, James A. de Rothschild. He has been a major benefactor of the restoration of Waddesdon Manor through a private family charitable trust and, in an unusual arrangement, has been given authority by the National Trust to run Waddesdon Manor as a semi-independent operation. The cellars at Waddesdon Manor house his personal collection of 15,000 bottles of Rothschild wines dating as far back as 1870.