John Armstrong is a script-writer and story consultant, as well as the director of the documentary The Real Flying Doctors (1992).
Although Armstrong has written screenplays for the feature films Risk and The Dragon Pearl, his primary area of work is television script-writing. In particular, he writes extensively for children's television, including animated programs (such as The Woodlies and Bananas in Pyjamas) and live-action television (including Wild Kat).
He has written for more than one of Jonathan M. Shiff Productions' programs, including scripts for Scooter: Secret Agent and H2O: Just Add Water.