The British Rail Classes 105 and 106 diesel multiple units were built by Cravens Ltd. of Sheffield from 1956 to 1959. The class were built with a side profile identical to British Railways Mark 1 carriage stock, using the same doors and windows. None were selected for refurbishment. The last passenger car was withdrawn from service in 1988. Originally AEC engined vehicles were class 105 and Leyland engined vehicles were class 106, but in the late 1970s they all became class 105s.