(07 Jun 2015, 7:27 pm)mb134 wrote Would still class it as rare though surely, an X21/22 branded Enviro on a contract (?), surely a standard Arriva vehicle should be operating it.
It's whatever is available at the time, there's been MAX vehicles, the 16xx series Darts, Sapphire E400s, and about every type of bus has been used on the AN20.