"Angvia," the planet the aliens are from, is an anagram for vagina.
According to a recent book on Tigon pictures James Robertson Justice was very ashamed to be working on a film of this sort.
The name of the hero, James Word, is most probably a reference to the motto of the London Stock Exchange: "My Word is my Bond."
Zeta One was the first film shot at Camden Studios, which was formerly a wallpaper factory in North London.
The characters of Atropos (Valerie Leon), Clotho (Anna Gael), and Lachesis (Brigitte Skey) are the same as the three Fates in Greek mythology.