"The story of the conception of a new British weapon for smashing the German dams in the Ruhr industrial complex and the execution of the raid by 617 Squadron 'The Dam Busters'."
Richard Todd
as Wing Commander Guy Gibson, V.C., D.S.O., D.F.C.
Michael Redgrave
as Doctor B. N. Wallis, C.B.E., F.R.S.
Ursula Jeans
as Mrs. Wallis
Basil Sydney
as Air Chief Marshal Sir Arthur Harris G.C.B., O.B.E., A.F.C.
Patrick Barr
as Captain Joseph (Mutt) Summers, C.B.E.
Ernest Clark
as Air Vice-Marshal The Hon. Ralph Cochrane G.B.E., K.C.B., A.F.C.
Derek Farr
as Group Captain J. N. H. Whitworth, D.S.O., D.F.C.
Charles Carson
as Doctor
Stanley Van Beers
as Sir David Pye, C.B., F.R.S.
Colin Tapley
as Doctor W.H. Glanville, C.B., C.B.E.
Frederick Leister
as Committee Member
Eric Messiter
Laidman Browne
Raymond Huntley
as Official, National Physical Laboratory
Hugh Manning
as Official, Ministry of Aircraft Production
Edwin Styles
as Observer at Trials
Hugh Moxey
Anthony Shaw
as R.A.F. Officer at Trials
Laurence Naismith
as Farmer
Harold Siddons
as Group Signals Officer
Frank Phillips
as BBC Announcer
Brewster Mason
as Flt / Lt. R. D. Trevor-Roper, D.F.C., D.F.M.
Tony Doonan
as Flt / Lt. R. E. G. Hutchison, D.F.C.
Nigel Stock
as Flying / Off. F. M. Spafford, D.F.C., D.F.M.
Brian Nissen
as Flt / Lt. A. T. Taerum, D.F.C.
Robert Shaw
as Flt / Sgt. J. Pulford, D.F.M.
Peter Assinder
as Plt/Off. G. A. Deering, D.F.C.
Richard Leech
as Squadron Leader H. M. Young, D.F.C.
Richard Thorp
as Squadron Leader H. E. Maudslay, D.F.C.
John Fraser
as Flight Lieutenant J. V. Hopgood, D.F.C.
David Morell
as Flight Lieutenant W. Astell, D.F.C.
Bill Kerr
as Flight Lieutenant H. B. Martin, D.S.O., D.F.C., A.F.C.
George Baker
as Flight Lieutenant D. J. H. Maltby, D.S.O., D.F.C.
Ronald Wilson
as Flight Lieutenant D. J. Shannon, D.S.O., D.F.C.
Denys Graham
as Flying Officer L. G. Knight, D.S.O.
Basil Appleby
as Flight Lieutenant R. C. Hay, D.F.C.
Tim Turner
as Flight Lieutenant J. F. Leggo, D.F.C.
Ewen Solon
as Flight Sergeant G. E. Powell
Harold Goodwin
as Wing Comdr. Gibson's Batman
Patrick McGoohan
as Guard at door (uncredited)
Peter Arne
as Staff Officer to Air-Vice Marshal Cochrane (uncredited)
Edward Cast
as Crew Member (uncredited)
Richard Coleman
as RAF Officer (uncredited)
Brenda De Banzie
as Waitress (uncredited)
Peter Diamond
as Tail Gunner (uncredited)
Gerald Harper
Arthur Howard
as RAF Pay Clerk in NAAFI (uncredited)
Lloyd Lamble
as Collins (uncredited)
Philip Latham
as Flight Sergeant (uncredited)
Edwin Richfield
Guy Gibson
Author
Erwin Hillier
Director of Photography
Leighton Lucas
Music
Paul Brickhill
Michael Anderson
Director
R.C. Sherriff
Screenplay
George Blackwell
Special Effects
Stuart Freeborn
Makeup Artist
Robert Jones
Art Direction
Norman Warwick
Camera Operator
Gordon Scott
Production Manager
Arthur Southgate
ADR & Dubbing
Hilda Fox
Hairstylist
W.A. Whittaker
Production Supervisor
Eric Coates
Additional Music
Harold V. King
Recording Supervision
Richard Best
Editor
G. B. Walker
Casting Director
John Street
Assistant Director
Thelma Orr
Continuity
Gilbert Taylor
Robert Clark
Executive In Charge Of Production
Aerial Camera
Louis Levy
Music Director
Robert Lennard
J. N. H. Whitworth
Technical Advisor
Philip Barnikel
Assistant Editor
Les Hammond
Sound Recordist