Hornby R30170 RailRoad Plus BR, Class 110 3 Car Train Pack - Era 6

History from Hornby's website:

Designed to deal with the steep gradients of the Calder Valley route, the Class 110 was distinctive in being the first generation DMU with the highest power to weight ratio of any naturally aspirated unit. In 1982 the middle trailer car was removed from most sets to reduce maintenance costs and further improve acceleration. Exactly one of each, a two car and a three car have been preserved.