Blickling Hall, Norfolk
Tyntesfield, North Somerset
Wicken Fen, Cambridgeshire
Standen House and Garden, West Sussex
Coleton Fishacre, Devon
BBC Enterprises Ltd
Mitsubishi
The Decca Record Co Ltd
E.M.I. Records Limited
Packwood House, Warwickshire
Plas Newydd, Anglesey
Tatton Park, Cheshire
Fountains and Studley Royal, North Yorkshire
Polesden Lacey, Surrey
Shaw's Corner, Hertfordshire
His Master's Voice
Garrard Turntables
Bush
Ferguson
The Chase and Baker Company
Quarry Bank, Cheshire
Trelissick, Cornwall
Grundig