DanPicken 10 Nov 2015, 7:59 pm #123 DanPicken DanPicken DanPicken Website Posts: 2177 Threads: 24 Joined: Jul 2013 Reputation: 0 RE: Arriva North East: Rare & Odd Workings - November 2015 (10 Nov 2015, 7:58 pm)GX03 SVC wrote So why do 7501-7509 and 7522-7528 carry X21/X22 branding??? Because they were done before 7518 as they were suffering reliability issues. Against the Anti-Lee Club.