(07 Jun 2024, 9:01 pm)Jimmi wrote Not necessarily, another number can be added on, especially if it closely mirrors another route, i.e. X71 - X72 has been taken off the X71 registration and registered separately.
There's also an X32 on the X30/X31 registration.
How busy do the stanley/consett expresses get? Also, how likely is it that the 37 comes back, as I use the 39 lot as the other buses between Washy & Sunderland can be unreliable sometimes.