Peter Dyneley
Jeff Tracy / Commander Norman (voice)
Sylvia Anderson
Lady Penelope Creighton-Ward / Madeline / Telephone Operator (voice)
Shane Rimmer
Scott Tracy (voice)
Jeremy Wilkin
Virgil Tracy / Mason / D103 Pilot / 1st Reporter (voice)
Matt Zimmerman
Alan Tracy (voice)
David Graham
Gordon Tracy / Brains / Parker / Skythrust Co-Pilot / Officer / Waiter / Fashion Buyers / Ross (voice)
Ray Barrett
Francois Lemaire / Captain Saville / Lieutenant Burroughs / Collins (voice)
Christine Finn
Tin-Tin Kyrano / Dierdre / Saville's Secretary (voice)
Paul Maxwell
Captain Ashton / 2nd Reporter (voice) (uncredited)