Since 2004, he has been board director of Cayzer Continuation PCC Ltd and since 2006, non-active chairman of Air Touring Ltd. According to his register of interests on the House of Lords website, he is a director of Cornbury Estates Company Limited and Cornbury Maintenance Company Ltd (both described as property companies) and of Bygone Engineering. Cornbury Park has about 5,000 acres of land, including part of the old royal forest of Wychwood. Cayzer has developed business units for rental there, and for several years sponsored a music festival.