Filmography25 titles
| Year | Title | Character | Age at release |
|---|---|---|---|
| 2023 | The Last Kingdom: Seven Kings Must DieMovie | Queen Eadgifu | 44 |
| 2022 | The WonderMovie | Rosaleen O'Donnell | 43 |
| 2021 | IntruderSeries | Rebecca Hickey | 42 |
| 2020 | The Dark TowerMovie | Gabrielle Deschain | 41 |
| 2018 | Strangeways Here We ComeMovie | Steph Nolan | 39 |
| 2018 | A Discovery of WitchesSeries | Louisa de Clermont | 39 |
| 2016 | Mum's ListMovie | Rachel | 37 |
| 2016 | National Theatre Live: Les Liaisons DangereusesMovie | Madame de Tourvel | 37 |
| 2016 | Property of the StateMovie | Margaret | 37 |
| 2015 | The ProgramMovie | Betsy Andreu | 36 |
| 2015 | No OffenceSeries | Dinah Kowalska | 36 |
| 2011 | Just HenryMovie | Maureene | 32 |
| 2009 | Harper's IslandSeries | Abby Mills | 30 |
| 2008 | A Room with a ViewSeries | Lucy Honeychurch | 29 |
| 2007 | A Room with a ViewMovie | Lucy Honeychurch | 28 |
| 2005 | The Ghost SquadSeries | Amy Harris | 26 |
| 2005 | FingersmithSeries | Maud Lilly | 26 |
| 2003 | WatermelonMovie | Anna Ryan | 24 |
| 2001 | The OthersMovie | Lydia | 22 |
| 2001 | The Lost WorldMovie | Agnes Cluny | 22 |
| 2001 | The Lost WorldSeries | Agnes Cluny | 22 |
| 2001 | Disco PigsMovie | Runt / Sinead | 22 |
| 1999 | Felicia's JourneyMovie | Felicia | 20 |
| 1993 | Mission Top SecretSeries | — | 14 |
| 0 | The Reformation of Sister EdithMovie | Mathilde | — |