The British Rail Class 155 known as the Super Sprinter is a diesel multiple unit. These DMUs were built by British Leyland at Workington (using Leyland National bus components) between 1987 and 1988 as part of British Rail's replacement of its ageing diesel fleet which were First-Generation. 42 units were originally built, however only 7 remain; the other 35 units were converted to Class 153 railcars.