(01 Jan 2016, 8:14 pm)Davie Maybe they did but then got removed?
A photograph of 6048 (which does not currently have red leather headrests) taken when it was new in 2012 shows that it didn't have them then, either:
https://www.flickr.com/photos/emdjt42/78...HjG-rMumJ7
Same case with 6046 and 6047. Personally, I couldn't see the sense in removing the headrests... Another thing of note, is that the website states that the ''Tyne Tees Xpress'' has ''luxury seating''. I'm guessing that these headrests are what defines the seating as luxurious? If so, how can the service provide luxury seating when only half of the vehicles branded for the service have them, and the other half are absent of them?
