 In 1978, Leyland brought out a simplified model (10351B/1R) intended to replace the Bristol LH which had been in production since 1967 and was a type popular in NBC companies for rural routes.It was available in a single length (10.3m) and had a revised interior that had minimal lighting and without the rear roof-mounted heating unit in previous models.Heating was under the seats, and was basic but effective.