Stuart Phin 24 Dec 2014, 1:51 am #112 Stuart Phin Stuart Phin Stuart Phin Posts: 120 Threads: 1 Joined: Jul 2014 Reputation: 0 RE: Arriva North East: Rare & Odd Workings (23 Dec 2014, 11:35 pm)Tom wrote What time did you see it? If it was around quarter-past, it might have been the X21. All the 21s and X21 were gas bus operated today with 4811,4812,4813,4814 all on it