 | Rob Brydon als Whale (voice) |
 | Sally Hawkins als Snail (voice) |
 | Diana Rigg als Narrator (voice) |
 | Cariad Lloyd als Teacher (voice) |
 | Max Lang als Fish (voice) |
| Daniel Snaddon | Director |
| Max Lang | Director |
| Martin Pope | Producer |
| Michael Rose | Producer |
| Robin Morrison | Music Editor |
| René Aubry | Original Music Composer |
| Karen Lindsay-Stewart | Casting |
| Max Lang | Writer |
| Suzanne Lang | Writer |
| Julia Donaldson | Author |
| Axel Scheffler | Author |
| Samantha Cutler | Lead Animator |
