Arnold Bedford

Edward Judd

Kate Callender

Martha Hyer

Joseph Cavor

Lionel Jeffries

Gibbs, Cavor's Hired Man (uncredited)

Erik Chitty

Margaret Hoy

Betty McDowall

Dymchurch Registrar

Miles Malleson

Stuart

Norman Bird

Nursing Home Matron

Gladys Henson

Richard Challis

Hugh McDermott

Glushkov, UN Space Agency

Laurence Herder

Sgt. Andrew Martin (uncredited)

Gordon Robinson

Dr. Tok (uncredited)

Marne Maitland

Sparks

Douglas Ives

Bailiff's Man (uncredited)

Peter Finch

Col. Rice (uncredited)

Sean Kelly

Cosmonaut Nevsky, Moon Landing Crew (uncredited)

John Murray Scott

Reporter from the 'Express'

Paul Carpenter

Announcer (uncredited)

Huw Thomas

First Reporter (uncredited)

John Forbes-Robertson

Second Reporter (uncredited)

Kenneth Watson

Narrator (uncredited)

Valentine Dyall

British Astronaut, Moon Landing Crew (uncredited)

Brook Williams

Constable (uncredited)

George Hilsdon