Peter Finch (Johnnie Byrne)
Stanley Holloway (Fred Andrews)
Mary Peach (Pauline West, model)
Donald Pleasence (Roger Renfrew)
Billie Whitelaw (Mary)
Rosalie Crutchley (Alice Byrne)
Conrad Phillips
George Rose
Oliver Reed
Maureen Pryor
Fenella Fielding (Sheilah)
Gladys Henson (Constituent)
Derek Francis
Geoffrey Keen (Prime Minister)
Paul Rogers (Sydney Johnson)
Dennis Price (Flagg)
Peter Barkworth (Henderson)
Hugh Burden (Tim Maxwell)
Michael Goodliffe (Dr. West)
Mervyn Johns (Charlie Young)