In the Yorkshire countryside, working-class tomboy Mona meets the exotic, pampered Tamsin. To seal their friendship, Mona introduces Tamsin to her born-again Christian brother and helps her spy on her adulterous father. Bound together by their secrets, the two girls see their friendship deepen and enter into dangerous waters.
| Directing | Paweł Pawlikowski | Director |
| Production | Tanya Seghatchian | Producer |
| Production | Chris Collins | Producer |
| Writing | Paweł Pawlikowski | Screenplay |
| Writing | Michael Wynne | Writer |
| Editing | David Charap | Editor |
| Writing | Helen Cross | Novel |
| Camera | Ryszard Lenczewski | Director of Photography |
| Production | Buffy Hall | Casting |
| Art | John Stevenson | Production Design |
| Sound | Will Gregory | Original Music Composer |
| Costume & Make-Up | Julian Day | Costume Design |
| Sound | Alison Goldfrapp | Original Music Composer |
| Art | Netty Chapman | Art Direction |
| Camera | David Scott | Additional Photography |
| Sound | Ben Meechan | Sound Effects Editor |
| Production | Chris Auty | Executive Producer |
| Production | Keith Evans | Executive Producer |
| Production | Emma Hayter | Executive Producer |
| Production | David M. Thompson | Executive Producer |
| Production | Josh Neale | Producer's Assistant |
| Costume & Make-Up | Tara McDonald | Makeup & Hair |
| Production | Charlotte Ashby | Production Manager |
| Production | Emma Fowler | Production Manager |
| Directing | Michael Elliott | First Assistant Director |
