(18 Mar 2020, 8:09 pm)scanialover wrote Might have been 6334 that was taken off. Didn't catch the fleet number when I got on. It would seem as thought it was a fault when it arrived at Gateshead on the way north, then while they sorced a replacement one of the spare/depot drivers brought it across to Eldon Square and back.
Not sure about that one.
BusTimes suggests it was 6334 that had the issues.