Capt. E.V. Kinross R.N. - Captain 'D' (as Noel Coward)
Ordinary Seaman Shorty Blake
Chief Petty Officer Walter Hardy
Mrs. Alix Kinross
Freda Lewis
Mrs. Kath Hardy
No. 1
Flags
Guns
Torps
Midshipman
Engineer Commander
Pilot
Doc
Sub
Sub-Lieutenant R.N.V.R.
Secco
Brodie
Joey Mackeridge
Young Stoker
Edgecombe
Reynolds
Parkinson
Fisher
Moran
Coombe
Hollett
Posty
Coxswain
Cmdr. Spencer (as Franklin Bennett)
No. 1. 'Tremoyne'
Col. Lumsden
Jasper
Bobby Kinross
Lavinia Kinross
Mrs. Blake
Mrs. Lemmon
Maureen (as Penelope Dudley Ward)
Mrs. Macadoo
Mrs. Farrell
Nell Fosdick
Emily
Barmaid
Mona Duke (as Trixie Scales)
Mr. Blake
Uncle Fred
Albert Fosdick (as Mickey Anderson)
May Blake
Nurse
Photographer
Mr. Satterthwaite
Freda's Baby
Self (voice) (archive sound)
Soldier in the Dunkirk Sequence (uncredited)
Survivor Crewman (uncredited)
Train Passenger (uncredited)
Self (archive footage) (uncredited)
Narrator (voice) (uncredited)
Rescued sailor (uncredited)