Three were built at the NCC's parent company's Derby Works, and numbered 71–73. They were soon after "renumbered" X, Y and Z, to allow the class U locomotives to be renumbered into the 70–73 number block. The V class was then renumbered 13–15.
All passed to the Ulster Transport Authority (UTA) in 1949. Between 1951 and 1953, the UTA rebuilt them with Belpaire boilers and reclassified them as Class V1. They were withdrawn from service in 1961 (14 and 15) and 1964 (13). All were scrapped.