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Len Jones
Joe McClaine (voice)

Rupert Davies
Professor Ian 'Mac' McClaine (voice)

Keith Alexander
Sam Loover / Russian Pilot / Moscow Air Defence Director / Anton / Captain William Barry (voice)

David Healy
Shane Weston / Russian Commander / Base 513 Controller / Kramer / Bates / Commander Kovac (voice)

Jeremy Wilkin
General / Officer / Lieutenant / Tanker / Hunter 2 / B107 Co-Pilot Hal / 2nd Russian (voice)

Gary Files
Reporter / Russian Radio Operator / Co-Pilot Frank Casper / Agent 26 / Fearless Foley / Dr. William Kelvin (voice)

Sylvia Anderson
Stewardess / Mrs. Mary Rose / Mrs. Ada Harris (voice)