No reason why he shouldn't if he has as much spent on restoration/maintenance as I bet the old bus has! There's firm that restores these old ones just round the corner from us and I was chatting to one of the blokes one day, I can't remember now what the figure was but they pay a huge amount for them in terrible condition then turn them out looking brand new again - and large parts of them are exactly that!
Great colours, both of thrm!! This is what makes me wonder, whats haooens when they stop all diesel and petrol. Surely you cant cant just scrap classics or put them in a show room never to be used again.