(11 Apr 2014, 8:10 pm)peter wrote I doubt 7504 is going to go Sapphire. When the PVR of the X22 is 6 and Arriva are getting 6 brand new Sapphire Enviro 400's, and then the PVR of the X21 is 8 and Arriva have 8 09-reg Enviro 400's that could easily be refurbished (7514-7521), it hardly seems a coincidence. I think that the most likely reason for 7504 to be heading to Thorntons is just for some general maintence before heading to operate at Ashington as we all know the condition that the Enviro 400's have ended up in while at Redcar/Whitby so they probably could do with a bit of proffesional attention, hence also why I doubt they'll be going Sapphire. However an alternative (but also just as likely) theory as to why 7504 is heading to Thorntons is that it is going there to be refurbished to MAX specification for service X14.
I second that, 7504 is probably at Thorntons for a mid life refurbishment, as the interiors are starting to look tatty.