Do you think that if Arriva upgrade the X21 / X22 (57 plates) that they'll buy newer vehicles for the 7 and 24 with the X21 / X22 consisting in the same type of vehicles (well almost) in the form of:

- 7522 to 7528
- 7534 to 7540
- 7518

Bearing in mind that producion of the classic E400 bodywork may well not exist soon. Only thing to take into consideration woud be that the destinations on 7522 to 7528 inc 7518 would have to be updated to match the 15 plates.