The 1955 British Railways modernisation plan recognised the fact that the UK rail system required a new high capacity tanker wagon to cater for the growing demand of petroleum products. Working with the Charles Roberts Railway Wagon Works and the Esso Petrol company a modern design capable of higher speeds was developed. Subsequently a large number of users operated the same vehicles - with their use lasting into the 1990's on commercial traffic and longer in engineers use. Our model will feature the Class A, and shorter Class B tanks . Class B tanks featuring a heater unit for heavier oils. Both original and upgraded suspension styles will be offered.