Just to add to this, pre-chord, this was a regular job of mine.
TPE night diagrams when sent Picc-Vic-Leeds could be either
Salford Crescent - Changing ends on the platform.
or, occasionally
Ordsall Lane Jn (Chat Moss Line) - Changing ends behind the signal.
Often, there were two drivers, one working it Airport to Vic & finish, the second boarding at Picc going passenger to Vic, to then taking it on to York. A few of them would sit in both ends to save time - so when the train arrived at Salford Crescent, one would quickly key out, the other key in and signal permitting, off we'd go towards Vic near instantly. Easy?
No. One night, there were two sets, the guard sat in the middle (front cab of the rear set). Upon arrival, they jumped out to move to the adjacent cab. On shutting the first middle cab door.... within a split second, off the train sailed away... minus the guard
...20 minutes late off Vic awaiting taxi.
Wasn't me, was on a beach at the time
TPE nights could also see diversions -
via Hebden Bridge, Heeley Mills, Bradford Interchange, Altofts, Woodlesford, Castleford, Brighouse, Greetland, Ashton and very occasionally.... mainline... which meant you'd arrive 30 mins early.