Gresley developed the V1 as a powerful tank locomotive for suburban lines. Its drive consisted of three cylinders cast in one piece. Between 1930 and 1939, 82 V1s were built, which were initially used in the Glasgow and Edinburgh area. Ten V3s were then built, which had 20 psi higher boiler pressure. From 1948, a total of 71 V1s were converted to V3s by the LNER and British Railways. The decommissioning took place between 1960 and 1964. 