Thursday afternoon, Rob Auton was just embarking on a typically thoughtful monologue when he broke off to harangue someone in the middle of the front row. "You've got a pad! What are you doing?"

All good, it wasn't a shameless reviewer - Ben the student was drawing the comic, while watching, and why not? Rob presenting the finished piece then added a bonus visual flourish to the encore.

Look out for Ben drawing comics at shows over the next few days...