Stoke-on-Trent is a city in Staffordshire, England. Stoke is polycentric, having been formed by a federation of six towns in the early 20th century. Stoke-on-Trent is the home of the pottery industry in England and is commonly known as the Potteries. Formerly a primarily industrial conurbation, it is now a centre for service industries and distribution centres.  Hanley is the primary commercial centre. The four other towns are Burslem, Tunstall, Longton and Fenton. The main shopping centre is the Potteries Shopping Centre in Hanley. The other five towns of the city all have their own smaller town centres. There are also retail parks in Tunstall, Fenton and Longton.