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Peter Graves as Prince of Wales |
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Joyce Howard as Maria Fitzherbert |
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Leslie Banks as Charles Fox |
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Margaretta Scott as Lady Jersey |
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Wanda Rotha as Princess Caroline of Brunswick |
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Mary Clare as Duchess of Devonshire |
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Frederick Valk as King George III |
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Ralph Truman as Richard Brinsley Sheridan |
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John Stuart as Duke of Bedford |
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Helen Haye as Lady Sefton |
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Chili Bouchier as Norris |
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Lily Kann as Queen Charlotte |
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Lawrence O'Madden as Lord Southampton |
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Frederick Leister as Henry Errington |
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Scott Forbes as Prince William |
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Barry Morse as Beau Brummell |
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Eugene Deckers as Philippe |
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Ivor Barnard as Rev. Burt |
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Henry Oscar as William Pitt |
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Arthur Dulac as Franz Joseph Haydn |
| Sound | Hans May | Music Director |
| Sound | Stanley Black | Original Music Composer |
| Production | Fred A. Swan | Production Supervisor |
| Costume & Make-Up | L.M. Tweedy | Wardrobe Supervisor |
| Costume & Make-Up | Henry Hayward | Makeup Artist |
| Writing | Winifred Carter | Novel |
| Sound | Cecil Thornton | Sound Recordist |
| Directing | Robert Asher | Assistant Director |
| Art | R. Holmes Paul | Art Direction |
| Camera | Gerald Moss | Camera Operator |
| Camera | James Wilson | Director of Photography |
| Costume & Make-Up | A. G. Scott | Hairstylist |
| Sound | Eva Catchpole | Sound Editor |
| Costume & Make-Up | Eva Melova | Costume Design |
| Editing | Charles Hasse | Editor |
| Production | Louis H. Jackson | Producer |
| Directing | Montgomery Tully | Director |
| Writing | Montgomery Tully | Writer |
