(13 Mar 2016, 12:36 am)northern156 wrote Would this be the case though? The TEN B9s, from what I would presume, don't get much rest either. When a 10 arrives at Hexham it forms the next one back out to Newcastle, and vice versa (ok, maybe a bit of layover at Eldon Square but I wouldn't say it's massive).
With the TEN route being more high-speed than the 21 (open roads at 50-60mph as opposed to a lot of residential 30-40mph roads) there would be more miles covered against the time they're running; equalling in a high mileage. Of course the point about the very late night running does still stand.
Just another unrelated question - do driver changes still regularly take place at Blaydon?
I don't know, the 21s get to stretch their legs from Chester Le Street to Pity Me and from the Angel A1 Roundabout to just after Harlow Green, and on the evenings when they run on the X21 from Durham to Bishop Auckland.