Listen To The Music...

...tell me who this is by. The music used in this opening credits sequence to the movie Invasion UFO, a film compiled from various episodes of Gerry Anderson's 1969 sci fi series UFO, is not by Barry Gray. I'm sure this piece of music was used as a theme song to some program in the late '70s or early '80s, and if so someone should have a clue what it is.