I would be grateful if anyone could advise whether there were any diagrammed turns for 'Castle' class locos (or, indeed, any GW 4-6-0) on local stopping trains between Bath Spa and Swindon (via Box) in the mid-1950s, please, apart from the use of recently outshopped locos from Swindon Works.   In other words, if you saw a 'Castle' on a local stopper, did it have to have been one that was 'running-in' or were there actual diagrammed turns for locos that hadn't recently been in the works