The Sound Barrier

Ralph Richardson

John Ridgefield

Ann Todd

Susan Garthwaite

Nigel Patrick

Tony Garthwaite

John Justin

Philip Peel

Dinah Sheridan

Jess Peel

Joseph Tomelty

Will

Denholm Elliott

Christopher Ridgefield

Jack Allen

'Windy'

Ralph Michael

Fletcher

Leslie Phillips

Controller

Donald Harron

ATA officer

Vincent Holman

Factor