Stagecoach couldn't give a toss with regards to issuing child tickets to those who should be paying adult fare (in Sunderland, at least).
Have plenty of friends aged between 17 and 19 who still ask for an 85p single when they board and no questions are asked. They certainly don't look Under 16 never mind Under 14... Those who don't have a Key Card don't get on GNE buses as they can blag a cheaper single on a SNE bus.
RE: Arriva North East: Latest News & Discussion - April 2015