(18 Dec 2018, 7:53 pm)S830OFT wrote I would argue they do as all of their routes are Nexus services and with other companies accepting them on Nexus services you would simply assume they were accepted.
Simple thing to do to get an answer is ring or e-mail GCT or Nexus.
I actually had a Go North East driver decline the Day Rover once, as it was printed in the Arriva format!