The Doctor (1)

William Hartnell

Acting

Polly

Anneke Wills

Acting

Ben Jackson

Michael Craze

Acting

The Doctor (2) (uncredited)

Patrick Troughton

Acting

General Cutler

Robert Beatty

Acting

Barclay

David Dodimead

Acting

Dyson

Dudley Jones

Acting

Schultz

Alan White

Acting

Williams

Earl Cameron

Acting

Terry Cutler

Callen Angelo

Acting

American Sergeant

John Brandon

Acting

Tito

Shane Shelton

Acting

Wigner

Steve Plytas

Acting

Radar Technician

Christopher Matthews

Acting

Geneva Technician

Ellen Cullen

Acting

R/T Technician

Christopher Dunham

Acting

TV Announcer

Glenn Beck

Acting

Cybermen (voice)

Roy Skelton

Acting

Cybermen (voice)

Peter Hawkins

Acting

Cyberman

Harry Brooks

Acting

Cyberman

Reg Whitehead

Acting

Cyberman

Gregg Palmer

Acting