I've included images of a promotional leaflet from 1985 when 150001-002 entered public service following testing etc. plus a shot of another GWR 3 car 150, 150938 (vehicles 52238 57238 52219) at Taunton. Vehicle 57219 was damaged at Plymouth on 3rd April 2016 and is undergoing repairs, once complete the two '219' cars will be reunited as 150219. Guy Vincent
Many thanks Guy for all the details and pictures.