We’ve been out today as a family. Bought a family day ticket that covers up to 4 children. We have 2. We head home. Friend of a child gets on at a stop with no ticket. We didn’t know. Next stop ticket inspectors get on and the friend (10) panics. I explain this and the Ticket inspectors accept they can be covered on our family ticket but friend is still shocked. We reassure them and explain ticketing rules so he isn’t caught out again. Had a bus pass but this didn’t cover the train. Would you contact their parents to explain so they can educate or leave it as we’ve done what we can. Friend was very upset and grateful we helped. I think I should, partner says no as we’ve helped the child directly.