(05 Apr 2021, 6:34 pm)busmanT wrote The main market is clearly passengers from Tyneside & Washington.
You're right, I can't imagine a family of 4 waiting at the Peterlee A19 slip road or Wolviston Road where The Swan is in Billingham only to see a 'bus full' destination blind next to the X11.
As someone who lives in Old Billingham I wouldn't chance going all the way to Wolviston for the once a day special (I'm not saying this a flaw, I'm sure GNE know how frequent buses are between Middlesbrough and Billingham for connections to the X93/X4 anyway).
If anything, it would be nice if GNE did advertise their routes for us Teessiders to the seaside up north. Advertise a quick hop at Heworth for the 27 to South Shields or Change at Peterlee for Seaham etc using the new coaches on X9/X10.