Doctor B. N. Wallis, C.B.E., F.R.S.

Michael Redgrave

Wing Commander Guy Gibson, V.C., D.S.O., D.F.C

Richard Todd

Mrs. Wallis

Ursula Jeans

Group Captain J. N. H. Whitworth, D.S.O., D.F.C.

Derek Farr

Sir David Pye, C.B., F.R.S.

Stanley Van Beers

Air Chief Marshal Sir Arthur Harris G.C.B., O.B.E., A.F.C.

Basil Sydney

Official, National Physical Laboratory

Raymond Huntley

Captain Joseph (Mutt) Summers, C.B.E.

Patrick Barr

Air Vice-Marshal The Hon. Ralph Cochrane G.B.E., K.C.B., A.F.C.

Ernest Clark

Official, Ministry of Aircraft Production

Hugh Manning

Doctor

Charles Carson

Sir David Pye

Stanley van Beers

Doctor W.H. Glanville

Colin Tapley

Committee Member

Frederick Leister

Farmer

Laurence Naismith

Committee Member

Eric Messiter

Flight Lieutenant J. V. Hopgood, D.F.C.

John Fraser

Flight Lieutenant R.D. Trevor-Roper, D.F.C., D.F.M.

Brewster Mason

Flying / Off. F. M. Spafford

Nigel Stock

Flight Lieutenant R.E.G. Hutchison, D.F.C.

Anthony Doonan

Committee Member

Laidman Browne

Flight Lieutenant H. B. Martin, D.S.O., D.F.C., A.F.C.

Bill Kerr

Flight Lieutenant D.J.H. Maltby, D.S.O., D.F.C.

George Baker

Observers at Trials

Edwin Styles

Flt / Sgt. J. Pulford, D.F.M.

Robert Shaw

Observers at Trials

Hugh Moxey

R.A.F. Officer at Trials

Anthony Shaw

Wing Comdr. Gibson's Batman

Harold Goodwin

Group Signals Officer

Harold Siddons

BBC Announcer

Frank Phillips

Flight Sergeant G. E. Powell

Ewen Solon

Guard at Door (uncredited)

Patrick McGoohan

Flt / Lt. A. T. Taerum, D.F.C.

Brian Nissen

Squadron Leader H. M. Young, D.F.C.

Richard Leech

Flying Officer L. G. Knight, D.S.O.

Denys Graham

Plt/Off. G. A. Deering, D.F.C.

Peter Assinder

Squadron Leader H. E. Maudslay, D.F.C.

Richard Thorp

Flight Lieutenant R. C. Hay, D.F.C.

Basil Appleby

Flight Lieutenant W. Astell, D.F.C.

David Morell

Flight Lieutenant D. J. Shannon, D.S.O., D.F.C.

Ronald Wilson

Flight Lieutenant J. F. Leggo, D.F.C.

Tim Turner

Staff Officer to Air-Vice Marshal Cochrane (uncredited)

Peter Arne

Crew Member (uncredited)

Edward Cast

RAF Officer (uncredited)

Richard Coleman

Tail Gunner (uncredited)

Peter Diamond

RAF Officer (uncredited)

Gerald Harper

RAF Pay Clerk in NAAFI (uncredited)

Arthur Howard

Collins (uncredited)

Lloyd Lamble

Flight Sergeant (uncredited)

Philip Latham

RAF Officer (uncredited)

Edwin Richfield