From the opening credits of the first series of The Innes book of Records. Neil Innes deserves to be looked up, as does his music and the various TV shows he was involved with. For those of us that watched this particular show back in the day it was something of a secret treat even then. Cult the moment it aired and little better known all these years later. A very original talent the likes of which we seem not to get anymore. Anyway, back to the spacesuits.
This is the same helmet as used in the 1977 Dr Who story; The Invisible Enemy. It is most probably also the same helmet worn by the dead pilot in 1983 story; Terminus