Thanks Chrissie for your reply. I see you have been very busy.
I have already asked on the Britmovie website if someone knew how to get a copy of the Barnstormers. But unfortunately, it seems that all the episodes of this series have been lost. The series has apparently been run in Holland in the sixties and probably in other countries as well, that's what I have read somewhere. Let's hope it has been rerun later and somebody will have taped it. It would be the only way for me to check if this series is really the one I am looking for.
Whatever I thank you again for your help and I hope to come back here with good news.