(02 Jan 2022, 6:00 pm)MurdnunoC wrote I was aware of the service.I know it got extended to Durham around 07, then to Bishop about 2009ish.
Before it eventually became a coach-based service operated by Go North East, it was operated by OK Travel largely as a Saturday (it might have ran a couple of other days too - I can't remember) shoppers service to the Metrocentre alongside service X27 which operated between Fishburn/Hutton Henry and the Metrocentre.
Considering neither incarnation of the service exists, I think it is safe to say it wasn't particularly well used.
Didnt the X22 serve Leamside, Carrville & Belmont at one point?