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Dawn French as Beatrix Potter |
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Jessica Hynes as Sofie Dahl |
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Harry Tayler as Roald Dahl |
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Rob Brydon as William Heelis |
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Bill Bailey as Bona Fide Gent |
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Nick Mohammed as Mr. Entwistle |
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Alison Steadman as Dora |
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Nina Sosanya as Anne Landy |
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Mollie Holder as Ellen Dahl |
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Reegan Davies as Afhild Dahl |
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John Hannah as Narrator (voice) |
| Costume & Make-Up | Claire Pritchard | Makeup & Hair |
| Production | Elaine Cameron | Producer |
| Production | Dan Cheesbrough | Executive Producer |
| Production | Matt Clinch | Associate Producer |
| Production | Jon Montague | Executive Producer |
| Production | Meinir Stoutt | Line Producer |
| Production | Sue Vertue | Executive Producer |
| Production | Abigail Wilson | Executive Producer |
| Sound | Murray Gold | Original Music Composer |
| Camera | John Conroy | Director of Photography |
| Editing | Joe Randall-Cutler | Editor |
| Production | Jennifer Duffy | Casting |
| Art | Carwyn Evans | Art Direction |
| Art | Tom Pearce | Production Design |
| Art | Dave Tremlett | Art Direction |
| Art | Ceinwen Wilkinson | Supervising Art Director |
| Art | Sue Jackson-Potter | Set Decoration |
| Costume & Make-Up | Jane Spicer | Costume Design |
| Costume & Make-Up | Inma Azorin | Makeup Artist |
| Costume & Make-Up | Kate Roberts | Makeup Supervisor |
| Costume & Make-Up | Claire Williams | Hair Designer |
| Costume & Make-Up | Claire Williams | Makeup Designer |
| Production | Anna Evans | Production Manager |
| Production | Branwen Evans | Production Manager |
| Production | Rhys Griffiths | Unit Manager |
| Directing | Arizona Eastwood | Second Assistant Director |
| Directing | Lloyd Elis | First Assistant Director |
| Directing | Rhun Llewelyn | Third Assistant Director |
| Directing | Barry Phillips | Second Assistant Director |
| Art | Paul Aitken | Property Master |
| Sound | Richard Brooks | Sound Mixer |
| Sound | Paul McFadden | Sound Re-Recording Mixer |
| Sound | Gareth Meirion Thomas | Sound Mixer |
| Sound | Aria Prayogi | Sound Designer |
| Sound | Jon Thomas | Production Sound Mixer |
| Visual Effects | Kumar Gaurav | Visual Effects Producer |
| Visual Effects | Christian Lett | Visual Effects Supervisor |
| Visual Effects | Peter Rogers | Visual Effects Producer |
| Visual Effects | Molly Stracy | Visual Effects Coordinator |
| Visual Effects | Rachel Webb | Visual Effects Producer |
| Crew | Peter Pedrero | Stunt Coordinator |
| Crew | Marcus Shakesheff | Stunt Coordinator |
| Crew | Lee Sheward | Stunt Coordinator |
| Production | Gabriella Shimeld-Fenn | Casting Assistant |
| Costume & Make-Up | Amy Clarke | Costume Supervisor |
| Sound | Samuel Barnes | Music Supervisor |
| Sound | Iain Cooke | Music Supervisor |
| Writing | Abigail Wilson | Writer |
| Directing | David Kerr | Director |
| Costume & Make-Up | James Spinks | Makeup Supervisor |
