(13 Mar 2016, 1:02 am)northern156 wrote Very fair point, Gary. However is it half of the daytime 21s only go to Chester?
Not sure whether there is inter-working between a short and long run on arrival at Newcastle.
Also, the vehicles out on a night drop in at Chester later in the day.
I am guessing these have been out at some point earlier on, prior to heading back to the depot.