PMV - 2-axle Parcels and Miscellaneous Van (TOPS designation - NQ).
BY - were a similar design with a central guard's compartment.(TOPS - NH)
BZ were three axle vans with a guards compartment (TOPS - NI)
BY - were a similar design with a central guard's compartment.(TOPS - NH)
BZ were three axle vans with a guards compartment (TOPS - NI)