Super Express is the name given to the Hitachi multiple unit rolling stock forming the British Department for Transport's 'preferred option' for the Intercity Express Programme. It would initially be operated on the East Coast Main Line (ECML) and Great Western Main Line (GWML), with maximum speed limited to mph (). Agility Trains stated that the trains could be upgraded "with minor modifications" to run at mph (). An in-cab-signalling system such as ERTMS would be required for the higher line speed.