(01 Jun 2016, 4:44 pm)S813 FVK wrote I wouldn't think that there are issues regarding them being spares for Hexham - especially as it is only one school route which requires Seatbelts anyway, which the branded SRs can easily do if 618 is unavailable allowing 635/636 to cover for them on the Tynedale Links routes.
One could allow 556 to be withdrawn if theres ever a service cut