National Trust Museum of Childhood (Accredited Museum)
Hidcote Manor Garden, Gloucestershire
Erddig, Wrexham (Accredited Museum)
Knightshayes Court, Devon (Accredited Museum)
Cotehele, Cornwall (Accredited Museum)
Greenway, Devon (Accredited Museum)
Springhill, County Londonderry (Accredited Museum)
Hatchlands Park, Surrey (Accredited Museum)
Lanhydrock, Cornwall (Accredited Museum)
Mount Stewart, County Down (Accredited Museum)
Gray's Printing Press, County Tyrone
Sissinghurst Castle Garden, Kent (Accredited Museum)
Castle Ward, County Down (Accredited Museum)
Lamb House, Rye, East Sussex (Accredited Museum)
Aberglaslyn, Gwynedd
Mottisfont, Hampshire (Accredited Museum)
Tyntesfield, North Somerset
Hinton Ampner, Hampshire (Accredited Museum)
Reid and Sons
Cragside, Northumberland (Accredited Museum)
Kingston Lacy Estate, Dorset (Accredited Museum)
Biddulph Grange Garden, Staffordshire
Greys Court, Oxfordshire (Accredited Museum)
Colby Estate, Pembrokeshire
Llanerchaeron, Ceredigion (Accredited Museum)
Saltram, Devon (Accredited Museum)
Lee and Sons
Canons Ashby, Northamptonshire (Accredited Museum)
Penrhyn Castle, Gwynedd (Accredited Museum)
Thomas Hopper (Rochester 1776 - London 1856)
Penrhyn Quarries Ltd.
