I've just discovered your site because I was humming the tune to the Flashing Blade and couldn't remember the name of the series. The lyrics of the tune have stuck with me these past 50 years though!

I don't know anyone else who remembers Marine Boy so it was great to see it listed here and confirm that my memory is right about Oxygum.

So thank you very much it's great to see these programs remembered. You just need to add the Aeronauts!