I remember those trains with the Duchess, 11 Mk1s plus the three coach wine and dine set from York. I once photographed it at Selside and I don’t think I’ve ever seen such a tower of clag from a Duchess since. As you say in steam days the driver would have to think of his fireman, unlike today, he would go home at the end of his shift and then have to come back and do it all again the following day. There were good reasons why the infamous Crewe North Perth lodging turn had the following day as mandatory rest day. I think the Water Orton -Carlisle Class C must have been equally challenging when it was worked by a hand fired Black 5. To set against that 21st century firemen are generally not as young as their predecessors.