(11 Oct 2015, 8:19 pm)Greg in Weardale wrote There would have been a logic to making the 12/12A Blaydon Racers as it shares the routes around Blaydon / Winlaton with the 49/49A, using the five "spare" Citaros now believed to be going to the 57; the Omnicities for the 12 going to the 57 instead. There is no common factor between the 12/12A and the X30/31 to be in the same brand.
Other than the fact that they both link other places with the 'toon'?
The Fast Cats services don't have a common factor between them (apart from both going to Sunderland) and nothing has ever been said about it.