Portmeirion Potteries - Pottery firm based in Stoke-on-Trent, United Kingdom Portmeirion Potteries is a British ceramic manufacturer based in Stoke-on-Trent. They are a significant force in the pottery industry with a strong international following and an established reputation for high quality and innovative design. Portmeirion manufactures an extensive range of tableware, cookware, kitchenware ...