In the late 50s /early 60s on UK TV ,there was a series about the adventures of "Para Handy" and his Clyde Puffer , the "Vital Spark " , starring Duncan Macrae and Roddy MacMillan ( who later starred in "Chato's Land "). The thing is , I can remember the theme tune , and I can PLAY the theme tune , but I don't know what it's called !!; any ideas ???