Vincent Ball

as Rex Hooper

as Chief Justice Napier

as Cardinal

as Monty Chesney

as Leo Sullivan

as Bill Weiner

as Mr. Dickson

as Dr. Cumberland

as Priest

as Bishop of Sydney

as Judge

as Cyril Williams

as Col. Foster

as Tom Knight

as Headmaster

as Dave the Spook

as Mathew

as Stuart

as Warren

as Captain Ritchie

as Sir Rupert Barrington

as Joseph Lyons (Prime Minister)

as Lachlan McKinnon

as Lieutenant Commander Hubert Marsham

as Prime Minister

as Dr. Jeremy Lyall

as Col. Ian (Johnny) Hamilton

as Bailey Clark

as Admiral Spencer / Major Greenwell

as Supt. James Kendall

as Alex / Karen's lover

as Bernard Wilcox

as Australian Soldier

as Carpenter

as Australian Policeman (uncredited)

as Ship's Officer

as Pilot

as Bill Vernon

as Jenkins

as Cliff Wilton

as Dr. Blake

as Ransome

as Higgins (uncredited)

as David Kyle

as Michaels

as Ken

as Mike Billing

as Joplin

as Capt. Pat Foster

as Sgt Nesbitt

as Dr. John Pierre

as Bob Meredith

as George Storefield

as Barnes - HMS Achilles (uncredited)

as Thelma's cousin (uncredited)

as P.C. at Hospital (uncredited)

as Second Sailor at Dance

as Ben

as Mr. Lawson

as Johnson

as Digger

as Flight Sergeant Watkins

as Williams

as Ted Lintott

as John Drew

as Henley's Assistant

as David

as Young Husband

as Jack Murnahan

as the first workman

as Hero in cinema sequence