(18 Oct 2015, 7:56 pm)Kuyoyo wrote 664 was on the X20 on Thursday and given the board it was on was presumably on there on Wednesday as well given it started the day on the first X15 to Berwick and back to Alnwick (which I'm guessing is worked from the Alnwick outstation rather than sending a bus light from Ashington to Alnwick).
Back on 35 on the Friday. On the same run as I posted above...
Arriva Northumbria: 0664 | W664 CWX by DRS68008, on Flickr