Leiston is an English town in the East Suffolk non-metropolitan area of Suffolk, near Saxmundham and also Aldeburgh, about 2 miles (3 kilometres) from the North Sea coastline, 21 miles (34 km) north-east of Ipswich and also 90 miles (145 km) north-east of London. The community had a population of 5,508 at the 2011 Census. Considering that the closure of Garrett's, the community's economic situation has actually been dominated by 2 nuclear power stations on the shore at Sizewell: the currently deactivated Magnox reactors of Sizewell An and also the a lot more modern-day Pressurised Water Reactor of Sizewell B. A variety of smaller sized firms run from industrial parks within the town. Leiston's High Street works as the business and market hub of the surrounding agricultural area. The town's facilities consist of a post office, collection, banks, clubs as well as a variety of stores and other solutions. Leiston Film Theatre, a half-timbered structure with street front stores, is the earliest purpose-built cinema in Suffolk. The movie theater is owned and run by Leiston-cum-Sizewell Town Council and also supported by the Leiston Film Theatre Support Club, which has raised money for phase refurbishment and allowed the movie theater to set up the latest electronic 3D estimate system.