The BR engineers' Grampus is being produced for the first time as a ready-to-run model. The plain black livery was commonly applied by the engineering departments, even when the official livery colour was different and was still seen well into the 1980s.

Engineering wagons have long been neglected, the Grampus was one of the BR engineers principal open wagons. Developed from the last GWR ballast wagon design everything that needed to be moved to a remote worksite could be loaded into Grampus wagons. The long length wagons easily accomodated crossing timbers (extra-long sleepers), while full drop sides allowed ballast and spoil to be unloaded easily, while the removable ends allowed longer loads to be accomodated.