an English granular, soft-paste porcelain, pure white in colour, containing bone ash. It was made at a factory founded in 1813 by William Billingsley at Nantgarw, Glamorgan, Wales. Translucent and restrained in shape, it attracted the London trade, and much of Nantgarw porcelain was delivered to London in white and decorated there. An iridescent halo surrounds the enamel colours of London-decorated ware. The ware usually is impressed with “Nantgarw” in full. The factory closed in 1822.