(03 Sep 2016, 8:23 pm)BusLoverMum wrote The 21A never had an X21 stretch - only the 21 extended to Sunderland.
Unless there's significant changes to the routes, having the X tag beterrn Peterlee and Darlo or Boro is laughable, though. We're talking around 80 minutes for the journey!
When the X21 first started, there was a X21 that ran onto the 21A from Peterlee operated by Stockton depot.
![[Image: 15455977077_fb873e8366.jpg]](https://c6.staticflickr.com/6/5616/15455977077_fb873e8366.jpg)
Arriva North East 4658 / NK05 GXN by Matthew Jimmison, on FlickrThere was also an additional Sunderland - Peterlee weekday afternoon journey ran by Belmont which worked off the 24X.