Erddig, Wrexham (Accredited Museum)
Unknown
Dudmaston, Shropshire (Accredited Museum)
Llanerchaeron, Ceredigion (Accredited Museum)
Springhill, County Londonderry (Accredited Museum)
Sissinghurst Castle Garden, Kent (Accredited Museum)
Hughenden, Buckinghamshire (Accredited Museum)
Kedleston Hall, Derbyshire (Accredited Museum)
Berrington Hall, Herefordshire (Accredited Museum)
Polesden Lacey, Surrey (Accredited Museum)
Townend, Cumbria (Accredited Museum)
Wallington, Northumberland (Accredited Museum)
Dyrham, Gloucestershire (Accredited Museum)
Arlington Court, Devon (Accredited Museum)
Kingston Lacy Estate, Dorset (Accredited Museum)
