This 1942 fictionalized biopic chronicles the true story of how two of the most remarkable men in aviation history - visionary Spitfire designer R.J. Mitchell and his test pilot Geoffrey Crisp - designed a streamlined monoplane that led to the development of the Spitfire.
| Actor | Role |
|---|---|
 Leslie HowardR.J. Mitchell | R.J. Mitchell |
 David NivenGeoffrey Crisp | Geoffrey Crisp |
 Rosamund JohnDiana Mitchell | Diana Mitchell |
 Roland CulverCommander Bride | Commander Bride |
 Anne FirthMiss Harper | Miss Harper |
 David HorneMr. Higgins | Mr. Higgins |
 J.H. RobertsSir Robert McLean | Sir Robert McLean |
 Derrick De MarneySquadron Leader Jefferson | Squadron Leader Jefferson |
| RRosalyn BoulterMabel Lovesay | Mabel Lovesay |
| HHerbert CameronMacPherson | MacPherson |
 Toni Edgar-BruceLady Houston | Lady Houston |
 Gordon McLeodMajor Buchan | Major Buchan |
| GGeorge SkillanMr. Royce | Mr. Royce |
| EErik FreundMesserschmitt | Messerschmitt |
 Fritz WendhausenVon Straben | Von Straben |
 John ChandosKrantz | Krantz |
| VVictor BeaumontVon Crantz | Von Crantz |
| SSuzanne ClairMadeleine | Madeleine |
| FFilippo Del GiudiceBertorelli | Bertorelli |
 Brefni O'RorkeThe Specialist | The Specialist |
| GGerry WilmotRadio Announcer | Radio Announcer |
| JJack PeachRadio Announcer | Radio Announcer |