Looks like a set of coaches from a named train being used for a special with the carriage boards reversed.The first of her class , Old Oak Common's 4700 makes a spirited departure from Bristol Temple Meads , doubtless Paddington bound and I think that's what the label reads in the Midland Region coach window !You had to be lucky to capture on film one of these fine locomotives working a passenger duty as most of their time was spent at night rostered to fast fitted freights to and from the Capital, although on Summer Saturdays in the mid ' fifties Old Oak's Shedmasters would often put one on a Westcountry bound express passenger duty , with the down " Royal Duchy " being a favoured working from Paddington down to Plymouth .Enhanced in their later years bya fully lined out green livery the " Night Owls " were strong and free running engines , popular with footplate crews and although none were saved , a " new build " is presently underway at Didcot , the home of the Great Western Society.