B was the NER (and later ER) code for moves terminating in the York District. Light engine codes could be based either on the number of the train to be worked, e.g. 0V33 was going to take over 1V33, or the destination. Taking some ex-WR examples 0Z96 was going to the Birmingham District from elsewhere on the WR, 0Z45 was on its way to Tyseley MPD from within the Birmingham District, while 0C35 was going to Tyseley Carriage Sidings to pick up a train.