Doulton Royal is one of the most famous British pottery producers in the world, and one of the highest appreciated among the other world wide companies. Its products have been ever since it began producing pottery items, great quality. The earliest information we have on this famous company dates from 1815, when John Doulton and his partner John Watts established a pottery and porcelain in south London. Email: Bob Frassinetti. Art Dealer & Journalist.