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