Wrendale Designs and Sally Swannell mugs Rare Royal Worcester Porcelain, Bespoke Tableware for the famous Dorchester Hotel, Mayfair London. Rare Royal Worcester Porcelain, Bespoke Tableware for the famous Dorchester Hotel, Mayfair London. Circa 1960s Rare Royal Worcester Porcelain, Bespoke Tableware for the famous Dorchester Hotel, Mayfair London.