(25 Nov 2020, 8:13 pm)Andreos1 wrote 'I think' it's only been the 721 and variants of the 46/X46 that have ever done the Newcastle - Brandon/Crook route from the GNE/Northern/United stable.
Can't ever remember the 231 doing that and the prefix would suggest that it didn't either.
I remember the X46 that United (Arriva) ran. It seemed to take a bloody age so perfect for X!ines