My thoughts on the 7518 X21/X22 issue is that it could be argued as an "odd" working, however as it happens so often I don't feel it is worth reporting on a regular basis as it's certainly not an allocation that happens on a rare basis. Unfortunately this is a problem with noting spare Sapphire buses on here I feel, I never can decide whether to report Belmont's Sapphire spares appearing on the 6, 7, 22 and 24 as although they aren't branded for a specific route, they are still in the Sapphire brand.
EDIT: same applies with 1512 at Stockton for 5/5A and 1440 at Redcar for X3/X3A/X4/4.
Arriva North East: Rare & Odd Workings - November 2015
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