sentences:  The system is protected today by a Parliamentary undertaking given by the Crown Estate Commissioners on their 1981 purchase of the Laxton estate and by a Countryside Stewardship agreement held between the Court Leet and the then-Countryside Commission.The sykes, four areas of grassland, are also protected by SSSI status.Laxton's strip fields were depicted on a postage stamp designed by David Tress that was issued in 1999 by the Royal Mail as part of their Millennium stamp series; the stamp also doubled as Royal Mail's contribution to that year's Europa postage stamp issue with the theme of Parks and Reserves.