Just 5499 to my knowledge got some seats out of a scrapped Stagecoach E300 with the new GNE moquette, rest haven't been treated. The two Versas at Hexham likely won't be touched until some time next year when the Hexham contracts are supposedly going out to tender.
5507 has the old blue GNE interior including seats.
5499/5500/8347/5507/8