The locomotive that Thomas the Tank Engine was based on, an LBSC E2 Class Tank Engine with extended side tanks. 10 were built between 1913 and 1916, the last 5 being built with the extended side water tanks. The locos were used for yard shunting and switching activities and for short distance freight operations (their small coal bunkers made them unsuitable for long distance travel). They were withdrawn from service between 1961 and 1963. All were broken up and scrapped.