Coupling code: Blue Square
Underframe: 64ft 6in
Engines: Leyland Albion 230hp
When the NER/LMR wanted high quality DMUs for it's Hull - Liverpool "Trans-Pennine" services it ordered theses sets from Swindon based on the Inter-City / Cross Country sets it had built, but took heed of criticism on the drab looks of these earlier sets and involved industrial designer E.G. Wilkes in producing a more stylish appearance.
The sets were unique in having powered vehicles without driving cabs, with four power cars per six-car set to provide the power for the arduous gradients on the route. A set contained 60 first class and 232 second class seats and buffet car.
The type was integrated with the Class 123s in 1977 and became the normal power on the Hope Valley route over the Pennines on workings from the North West to Yorkshire. They also putting in daily appearances on services on the Leeds, Keighley, Skipton and Morecambe axis and on various other services in North West England, and also worked the Manchester to Cleethorpes trains on selected services.
In 1981 ten of the motor brake seconds had their engines removed making them trailer brake seconds.
All were withdrawn by 1984, none survive.