John Ridgefield takes his son-in-law Tony Garthwaite to the Test Bed to see the latest jet engine under test

Susan watches with horror as her brother Christopher's Tiger Moth crashes and bursts into flames

Nigel Patrick

Here the Prometheus is pictured in flight over Southern England

Nigel Patrick plays Tony Garthwaite who attempts to fly through the sound barrier

Dinah Sheridan plays the part of Jess Peel, a test pilot's wife. Her screen husband is John Justin

Filming the jet fighter!

Filming the jet fighter!

Ralph Richardson runs through a scene for David Lean

The camera operator is setting up a scene showing Todd's return from Cairo with her husband.

Filming the flight of the Prometheus

Susan overhears worrying news

Susan in conversation with her father

Tony Garthwaite (Nigel Patrick) inspecting the Prometheus

Denholm Elliott, Ann Todd, Nigel Patrick

Flying through the Sound Barrier..

Ann Todd as Tony Garthwaite's wife Susan

Nigel Patrick, Ann Todd and John Justin

John Justin as test Pilot Philip Peel in The Sound Barrier .

Disaster may lie in wait for Tony.

David Lean checking the view on set..

Nigel Patrick visits the Martin Baker Denham Works and tries out an ejector seat.

David Lean on set

Ann Todd and Nigel Patrick are rehearsing for the Sound Barrier. David Lean on ground