Electrostar is the name given to a series of related electric multiple-unit (EMU) passenger trains manufactured by Bombardier Transportation (formerly ADtranz) at their Litchurch Lane Works in Derby, England. Since the privatisation of British Rail, it has become the most common new EMU type in Britain, where different variants referred to as Class 357, Class 375, Class 376, Class 377, Class 378, Class 379 and Class 387, are most common on the high-volume suburban commuter routes in South, North and East London, and mainline services south to Surrey, Sussex, Kent & South Essex coasts and north to Cambridge and Stansted Airport . It shares the same bodyshell and core structure as the Turbostar, which is in turn the most common post-privatisation diesel multiple unit (DMU) family, and both e