Sylvia Anderson

Lady Penelope Creighton-Ward/Air Terrainean Guide (voice)

Ray Barrett

John Tracy/The Hood/Alan Tracy/Fireflash Co-Pilot/Assistant Controller/Harris/TX 204 Pilot (voice)

Peter Dyneley

Jeff Tracy/Commander Norman/Interceptor One Pilot (voice)

Christine Finn

Tin-Tin Kyrano/Airport Tannoy (voice)

David Graham

Gordon Tracy/Parker/Brains/Kyrano/Captain Hanson/Lt Bob Meddings/Fireflash Passenger/Crash Tenders/Doctor (voice)