No, worked by steam ,diesel and finaly 25kvac.The class 110 dmu ran services from steam to the elctric era they were good units but had a tendency to catch fire in later years due to bad maintainence ,class 108 put in an appearreance as did 110,s.The first electrics were old units(304)from the london area due to arguments about new units.Finaly new units from CAF in Spain arrived as three cars but are now four car.The 304,s had a problem stopping and had to be run as eight cars to help stop in stations etc.If you want to see the line in detail there is a dvd available from Tele Rail this also shows the line to Carnforth ,which is still very much a Midland Rly area with bridges and signal boxes still in situ.This area is worth a visit as you can seee see stations ,signal boxes still as the Midland intended.