Why no names on the route 13 branded buses?

[Dutsey]

As subject title asks, why are there no names on the route 13 branded buses?

[JoNi]

Another fad that's had its day? Probably cost too much to make the stickers!! :o

[lauren1993]

More to the point why aren't there names on the unbranded enviros!?
All other garages that name their enviros also bother to actually name the unbranded ones as well!