(22 Jul 2014, 5:45 pm)Dan wrote 'X' being used on services which aren't express services irritates me too, and the inconsistency between whether it's the first letter or last letter in the route number.
I know what you mean - the X25 is only limited stop along Old Durham Road, so why the hell do they need to have an X as a prefix when it's only express for a few stops?
Fair enough the X21 is understandable, but sometimes I feel like they can miss out a few stops between Durham and Bishop. The X20 only misses out nPower - I mean come on!
My idea of an express - Newcastle to Durham via the A1 - absolutely non-stop between Eldon Square and Durham Bus Stn.