Edward Judd
Dr. Mike Vernon
Acting
Yoko Tani
Leader of the Lystrians
Acting
Valerie Gearon
Dr. Claire Harland
Acting
Lyndon Brook
Brian Carter
Acting
Ric Young
The Lystrian
Acting
Tsai Chin
Nurse Lim
Acting
Barrie Ingham
Major Muncaster
Acting
Anthony Sharp
Lawrence Blackburn
Acting
Glyn Houston
Police Sergeant Draycott
Acting
Ann Castle
Sister Evans
Acting
Jean Lodge
Barbara Gough
Acting
Ann Martin
Sister Kelly
Acting
Tony Wall
Ted
Acting
Peter Thomas
Harry
Acting
Mark Kingston
Morgan
Acting
Emrys Leyshon
Sergeant Williams
Acting
Leonard Cracknell
Lloyd
Acting
Stephanie Bidmead
Elaine
Acting
Norman Mitchell
Lorry Driver
Acting
Peter Sinclair
Old Joe
Acting
Diane Aubrey
Telephone Operator
Acting
John Tate
Dundy
Acting