Rapidsnap wroteNope 4949 was part of that batch hence registered in sequence.I've done a quick comparison of body number and chassis number for the two vehicles, and there's no obvious clues from either as to which might have been the "replacement". I guess we'd need to look at documents from the time to find out.
Not sure which of 4954 (NL02ZRX) or 4955 (NA02NVL) was meant to be the replacement.
As addition around that time, Scania / Wright did build a handful of Solars to GNE spec interior which mainly ended up with First Group.
Now, how long has the "North East Bus Forum" been going for …..? ;-)