(21 Jan 2022, 6:58 pm)peter wrote A number of the Solo's at Durham haven't been used in quite a while (since the temporary PVR reductions on the 6/64). At this point Solo's aren't really suitable for any of Belmont's services, so if they went there to replace them, coinciding with those PVR's re-increasing, that would make sense. I imagine Arriva will be due more cascades to replace the remaining Omnicities, B7 Gemini's and the similar excess of Solo's at Jesmond over the course of this year.
I'm led to believe they're also due a fairly substantial new vehicle order, which is likely to see off many of the older vehicles you mention.