(02 Jul 2015, 6:11 pm)South Tyne Lad wrote Ah yes, the now X15 and X18 are the former 501 and 505 arnt they? Though im sure I seen a service 508 far up in Northumberland years ago. Was there a service 508 up around Alnwick years ago?
There was a 508 - Newcastle - Edinburgh via Jedburgh (the old United service 9 if you are old enough!)