Delph, sorry Holt, is coming along well. I suspect passengers were kept on the platform until the loco had finished running round and had propelled the stock up to the buffers. The L&Y 0-6-0s had to do this when no motor-fitted locos were available. I wish someone had photographed one of the LYR 2-4-2Ts at Delph in 1953.
The LNWR D333 Brake Third coach might not be rare at Delph. I remember climbing up to an end window, assisted by my mates, and looking down on the bunker of a Fowler 2-6-2T on the way out of Delph. For some reason the loco was at the oldham end of the train. In fact I did wonder if the M52 driving trailer had similar windows in the guards end. Such snippets of memory from boyhood are often difficult to reconcile with certain things.
I doubt if a 'West Country' would be allowed over the line, if only for aesthetic reasons...!B)