possibly J. N. Williams
Dyrham, Gloucestershire
Chelsea Porcelain Factory (1744-1769)
Lanhydrock, Cornwall
W Watts
Osterley Park and House, London
Wallington, Northumberland
Old Chelsea Furnivals Ltd
Llanerchaeron, Ceredigion
Erddig, Wrexham
Bernard Adams (b. London fl.1916 – London 1965)
Nunnington Hall, North Yorkshire
Killerton, Devon
Mompesson House, Wiltshire
Chelsea-Derby Porcelain (fl.1769-1784)
Springhill, County Londonderry
Greenway, Devon
Greys Court, Oxfordshire
