The NER originally operated with short four and six wheeled coaches with a fixed wheelbase. From these were developed the standard six-wheeled, low elliptical roofed coaches which were built in their thousands around the 1880s. One variety alone, the diagram 15, five compartment, full 3rd class, numbered around a thousand. The NER started building bogie stock for general service use in 1894, clerestories for general use with a variation built for use on the tightly curved line from Malton to Whitby. There were also a series of low ark roofed bogie coaches (with birdcage brakes) for use on the coast line north of Scarborough.