Jack Watling
as Don Henderson
Patrick Wymark
as John Wilder
Norma Ronald
as Kay Lingard
Elizabeth Begley
as Margie Thomas
Jerome Willis
as Alf Winter
Norman Tyrrell
as Sir Gordon Revidge
Peter Jeffrey
as James Cameron-Grant MP
Reginald Marsh
as Arthur Sugden
Richard Vernon
as Keith Saville
Robert Urquhart
as Henry Forbes
Sheila Raynor
as Mary Sugden
Wendy Gifford
as Laura Challis