 Complete the following phrase:  In 1870 the manufacture of Art pottery was begun at Lambeth, using the skills of students from the Lambeth School of Art later the City and Guilds of London Art School. The company exhibited at the Centennial Exposition of 1876 in Philadelphia. In 1877 works were opened at Burslem, where almost every variety of porcelain and earthenware has been produced. Works have since been opened at Rowley Regis, Smethwick, St Helens, Paisley and Paris. After the 