Characters played by Ralph Richardson
J.R.
Characters played by Ann Todd
Susan Garthwaite
Characters played by Nigel Patrick
Tony
Characters played by John Justin
Philip
Characters played by Dinah Sheridan
Jess
Characters played by Joseph Tomelty
Will
Characters played by Denholm Elliott
Chris
Characters played by Jack Allen
'Windy'
Characters played by Ralph Michael
Fletcher
Characters played by Rodney Goodall
Little Boy
Characters played by Donald Harron
ATA Officer
Characters played by Vincent Holman
Factor
Characters played by Jolyon Jackley
Susan's Baby
Characters played by Douglas Muir
Controller
Characters played by Leslie Phillips
Controller
Characters played by Anthony Snell
Peter Makepeace
Characters played by Sally-Jane Spencer
Daughter of Philip
Characters played by Robert Brooks Turner
Test Bed Operator