(11 Apr 2019, 8:07 am)Kuyoyo wrote Checking the registration number, the 55/55A/55X appears to be a renumbering of the X5/X5A.
That is the conclusion I came to initially, with the 55X being the replacement for the X6/X7.
RE: Go North East: Upcoming Service Changes v2
That is the conclusion I came to initially, with the 55X being the replacement for the X6/X7.