All of First Bristol's Volvo B10BLE/Wright Renowns have been withdrawn following the necessity for vehicles to be DDA compliant, none of which are. I understand some are R-reg, similar to Go North East's 4837-4855 in terms of age, so I imagine they've been withdrawn from the fleet based on their age, with First keeping them on until the final days of non-DDA compliancy. Not sure what has replaced them.