What can fill the gap once children outgrow panto (if you can ever outgrow panto!) but are too young for plays aimed at adults? Melly Still is the director of the National Theatre’s production of Nation, based on a Terry Pratchett novel, which opened last month and is aimed at an audience that’s ten plus. She joins Jenni, along with The Guardian theatre critic and children’s author Lyn Gardner, to talk about what it takes to win over a visually sophisticated, issue-aware generation to the theatre.