I did an interview with Jon Spooner, Director of Human Space Flight at the Unlimited Space Agency at Latitude 2018. It is now available as a podcast, which you can listen to here (Series 1, Episode 3).
It is intended to engage with children, and seems to work judging from the audience response and questions at the end. Adults may find it interesting too: we do talk some pretty serious physics.
Jon (S) is an excellent interviewer and the whole thing creates a very approachable atmosphere, so I recommend trying out the series, where he talks to many interesting people. You can subscribe on Spotify and various other poddy things.