Penrhyn Castle, Gwynedd
Castle Drogo, Devon
Mount Stewart, County Down
Wightwick Manor, West Midlands
Standen House and Garden, West Sussex
H. Brooks and Co.
Lanhydrock, Cornwall
Challen
Gibside, Tyne and Wear
Schiedmayer and Soehne
Kingston Lacy Estate, Dorset
Giant's Causeway, County Antrim
Collard and Collard
Feurich
Killerton, Devon
John Broadwood & Sons
Hanbury Hall, Worcestershire
Amyl
Nunnington Hall, North Yorkshire
Speke Hall, Merseyside
Brinsmead & Sons
Buttermere Valley, Cumbria
I. H. R. Mott
Powis Castle and Garden, Powys
Erard
Cliveden Estate, Buckinghamshire
