The NER had limited need for vestibuled coaches but from 1900 built a series of vestibuled, corridor coaches with British Standard gangways, for their longer distance services. The company introduced clerestory corridor dining trains on services between London and Edinburgh. The initial trial was run between York and Newcastle in 1 hour 30 minutes on 30 July 1900. The new train consisted of eight coaches and was long (excluding the engine), and had seating for 50 first-class and 211 third-class passengers. At the same time they built (in conjunction with their partners) similar coaches for the East Coast Joint Stock (GNR/NER/NBR) and the Great Northern and North Eastern Joint Stock.