(19 Jun 2021, 4:14 pm)Storx wrote Not a clue what the X6 uses nowadays isn't the PVR only 2 now though since the X7 got cut so there's still a few not allocated to anything. They're going onto something at Sunderland though as they're in the new red/black livery.
If I was going to guess the black and red ones would go on the 38/A and 33 with the older Solos going on the X6, making a Sunderland minibus network to match the new 2/2A brand. Unless there's enough to cover all the minibus routes, I'm not sure.