| Tove Jansson | Novel |
| Charlie McDowell | Director |
| Kevin Loader | Producer |
| Aleksi Bardy | Producer |
| Helen Vinogradov | Producer |
| Charlie McDowell | Producer |
| Robert Jones | Writer |
| Kath Mattock | Producer |
| Duncan Montgomery | Producer |
| Jack Selby | Executive Producer |
| Arthur Farache | Executive Producer |
| Victoria Castelli | Executive Producer |
| Lily Collins | Executive Producer |
