Richard Todd
饰 Wing Commander Guy Gibson, V.C., D.S.O., D.F.C.
Michael Redgrave
饰 Doctor B. N. Wallis, C.B.E., F.R.S.
Ursula Jeans
饰 Mrs. Wallis
Basil Sydney
饰 Air Chief Marshal Sir Arthur Harris G.C.B., O.B.E., A.F.C.
Patrick Barr
饰 Captain Joseph (Mutt) Summers, C.B.E.
Ernest Clark
饰 Air Vice-Marshal The Hon. Ralph Cochrane G.B.E., K.C.B., A.F.C.
Derek Farr
饰 Group Captain J. N. H. Whitworth, D.S.O., D.F.C.
Stanley Van Beers
饰 Sir David Pye, C.B., F.R.S.
Colin Tapley
饰 Doctor W.H. Glanville, C.B., C.B.E.
Frederick Leister
饰 Committee Member
Eric Messiter
饰 Committee Member
Laidman Browne
饰 Committee Member
Raymond Huntley
饰 Official, National Physical Laboratory
Hugh Manning
饰 Official, Ministry of Aircraft Production
Edwin Styles
饰 Observer at Trials
Hugh Moxey
饰 Observer at Trials
Anthony Shaw
饰 R.A.F. Officer at Trials
Laurence Naismith
饰 Farmer
Harold Siddons
饰 Group Signals Officer
