Richard Todd

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

Michael Redgrave

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

Ursula Jeans

Mrs. Wallis

Patrick Barr

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

Ernest Clark

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

Derek Farr

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

Charles Carson

Doctor

Frederick Leister

Committee Member

Raymond Huntley

Official, National Physical Laboratory

Edwin Styles

Observer at Trials

Anthony Shaw

R.A.F. Officer at Trials

Laurence Naismith

Farmer

Harold Siddons

Group Signals Officer

Brewster Mason

Flt / Lt. R. D. Trevor-Roper, D.F.C., D.F.M.

Nigel Stock

Flying / Off. F. M. Spafford, D.F.C., D.F.M.

Robert Shaw

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

Richard Leech

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

Richard Thorp

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

John Fraser

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

Bill Kerr

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

George Baker

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

Denys Graham

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

Tim Turner

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

Ewen Solon

Flight Sergeant G. E. Powell

Harold Goodwin

Wing Comdr. Gibson's Batman

Patrick McGoohan

Guard at door (uncredited)

Peter Arne

Staff Officer to Air-Vice Marshal Cochrane (uncredited)

Edward Cast

Crew Member (uncredited)

Brenda De Banzie

Waitress (uncredited)

Peter Diamond

Tail Gunner (uncredited)

Gerald Harper

RAF Officer (uncredited)

Arthur Howard

RAF Pay Clerk in NAAFI (uncredited)

Lloyd Lamble

Collins (uncredited)

Philip Latham

Flight Sergeant (uncredited)

Edwin Richfield

RAF Officer (uncredited)