 English Electric EL.100

English Electric EL.100 (Polish designations EP01, EL.100, E100 and E01) was a class of electric locomotives used by the Polish State Railways.Originally built and designed by English Electric as a line engine, it was used in Poland mainly for shunting, as a supplemental engine to ferry steam locomotives across the Warsaw Cross-City Line tunnel, between Pruszków and Otwock.