Rowallane, County Down
Ickworth, Suffolk (Accredited Museum)
Portledge, Devon
West Wycombe Park, Buckinghamshire
Dolaucothi Estate, Carmarthenshire
Alexander Keiller Museum, Wiltshire (Accredited Museum)
Polesden Lacey, Surrey (Accredited Museum)
Farmer & Brindley (fl.1860 - 1929)
Clumber Park, Nottinghamshire
Wallington, Northumberland (Accredited Museum)
Vyne Estate, Hampshire (Accredited Museum)
Upton House, Warwickshire (Accredited Museum)
Sudbury Hall, Derbyshire (Accredited Museum)
Chedworth Roman Villa, Gloucestershire (Accredited Museum)
Buscot and Coleshill Estates, Oxfordshire
Packwood House, Warwickshire (Accredited Museum)
Calke Abbey, Derbyshire (Accredited Museum)
King Henry's Hunting Lodge, Hampshire
Hughenden, Buckinghamshire (Accredited Museum)
Quarry Bank, Cheshire (Accredited Museum)