| Original title | The Captive Heart |
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| Danish title | Never Give Up |
| Other titles | Sønner af England |
| Leikstjórn | Basil Dearden |
| Screenplay | Angus McPhail |
| Director of Photography | Douglas Slocombe |
| Editor | Charles Hasse |
| Composer | Alan Rawsthorne |
| Appearance | Michael Redgrave, Mervyn Johns, Basil Radford |
| Land | Storbritannien |
| Technical info | 35 mm, Normal, Sort-hvid, Tone |
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| Production company | Ealing Studios |
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Instruktion |
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| Instruktion | Basil Dearden |
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Manus |
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| Manus | Angus McPhail |
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Produktion |
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| Produktion | Michael Balcon |
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Foto |
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| Foto | Douglas Slocombe |
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Klip |
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| Klip | Charles Hasse |
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Musik |
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| Musik | Alan Rawsthorne |
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Medvirkende |
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| Medvirkende | Michael Redgrave |
| Medvirkende | Mervyn Johns |
| Medvirkende | Basil Radford |
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