Most unusual motive power for the South Wales Pullman in the shape of 1015, Couunty of Gloucester, particularly as at this period in time both Old Oak Common and Cardiff Canton still had a number of Castles and Kings on their respective allocations, the more customary choice for such top link workings such as this . Formerly allocated to Plymouth Laira's depot 1015 was regularly rostered to the afternoon Kensington milk train, a heavily loaded duty upon which a County was invaraibly the chosen form of motive power by the Shedmasters at Laira in the early and mid 'fifties.