- Keith Alexander
- Sam Loover / Russian Pilot / Moscow Air Defence System Director / Armoured Vehicle 1 / Anton / Captain William Barry / Arctic Ship's Captain (voice) (archive footage)
- Sylvia Anderson
- Stewardess / Mrs. Mary Rose / Mrs. Ada Harris (voice) (archive footage)
- Rupert Davies
- Professor Ian 'Mac' McClaine
- Gary Files
- Reporter John Woodburn / Base 513 Guard / Russian Radio Operator / Red Leader Pilot / Manston Controller / Farmer / Co-Pilot Frank Casper / Agent 26 (Fez) / Fearless Foley / Private / Control / 1st Russian / B107 Pilot / Dr. William Kelvin / Radio (voice) (archive footage)
- Len Jones
- Joe McClaine
- Martin King
- Captain William Barry / Watson (voice) (archive footage)
- David Healy
- Shane Weston / Russian Commander / Base 513 Controller / Kramer / Bates / Commander Kovac (voice) (archive footage)
- Jeremy Wilkin
- General / Officer / Lieutenant / Tanker / Hunter 2 / B107 Co-Pilot Hal / 2nd Russian (voice) (archive footage)
