Peter Dyneley Jeff Tracy Voice David Graham Brains Voice Sylvia Anderson Voice Ray Barrett USN Sentinel Commander, Compère Voice Christine Finn Tin-Tin Kyrano Voice David Holliday Virgil Tracy Voice Shane Rimmer Scott Tracy, Scanners, Washington Voice Matt Zimmerman Alan Tracy, Ned Cook Voice Gerry Anderson Screenwriter, Producer David Elliott Director David Lane Director Donald Robertson Writer Alan Fennell Screenwriter Barry Gray Music John Read Cinematographer Peter Elliott Film Editor Len Walter Supervising Editor Bob Bell Art Director