Filmography53 titles
| Year | Title | Character | Age at release |
|---|---|---|---|
| 2025 | HamnetMovie | Mary | 58 |
| 2025 | The Legend of OchiMovie | Dasha | 58 |
| 2025 | SteveMovie | Jenny | 58 |
| 2024 | Dune: ProphecySeries | Mother Superior Valya Harkonnen | 57 |
| 2024 | Small Things Like TheseMovie | Sister Mary | 57 |
| 2020 | The Third DaySeries | Mrs. Martin | 53 |
| 2019 | ChernobylSeries | Ulana Khomyuk | 52 |
| 2018 | On Chesil BeachMovie | Violet Ponting | 51 |
| 2018 | The Happy PrinceMovie | Constance Wilde | 51 |
| 2018 | King LearMovie | Regan | 51 |
| 2017 | Kingsman: The Golden CircleMovie | Chief of Staff Fox | 50 |
| 2017 | Monster FamilyMovie | Emma Wishbone (voice) | 50 |
| 2017 | GeniusSeries | Elsa Einstein | 50 |
| 2017 | Little WomenSeries | Marmee March | 50 |
| 2017 | Apple Tree YardSeries | Yvonne Carmichael | 50 |
| 2015 | EverestMovie | Helen Wilton | 48 |
| 2015 | A Song for JennyMovie | Julie Nicholson | 48 |
| 2015 | Molly Moon and the Incredible Book of HypnotismMovie | Miss Trinklebury | 48 |
| 2015 | Testament of YouthMovie | Mrs. Brittain | 48 |
| 2015 | Little BoyMovie | Emma Busbee | 48 |
| 2015 | A Royal Night OutMovie | Queen Elizabeth | 48 |
| 2015 | The DresserMovie | Her Ladyship | 48 |
| 2014 | The Theory of EverythingMovie | Beryl Wilde | 47 |
| 2013 | The Book ThiefMovie | Rosa Hubermann | 46 |
| 2013 | BelleMovie | Lady Mansfield | 46 |
| 2012 | Anna KareninaMovie | Countess Lydia Ivanova | 45 |
| 2011 | War HorseMovie | Rose Narracott | 44 |
| 2010 | Cemetery JunctionMovie | Mrs. Kendrick | 43 |
| 2009 | Cold SoulsMovie | Claire | 42 |
| 2009 | Within the WhirlwindMovie | Evgenia Ginzburg | 42 |
| 2008 | Synecdoche, New YorkMovie | Tammy | 41 |
| 2008 | Fireflies in the GardenMovie | Jane Lawrence | 41 |
| 2007 | The Water HorseMovie | Anne MacMorrow | 40 |
| 2006 | Miss PotterMovie | Millie Warne | 39 |
| 2006 | Crusade in JeansMovie | Mary Vega | 39 |
| 2005 | Corpse BrideMovie | Victoria Everglot (voice) | 38 |
| 2005 | The PropositionMovie | Martha Stanley | 38 |
| 2005 | Wah-WahMovie | Ruby Compton | 38 |
| 2004 | The Life and Death of Peter SellersMovie | Anne Sellers | 37 |
| 2002 | EquilibriumMovie | Mary O'Brien | 35 |
| 2002 | Red DragonMovie | Reba McClane | 35 |
| 2002 | Punch-Drunk LoveMovie | Lena Leonard | 35 |
| 2002 | The Making of Gosford ParkMovie | Self | 35 |
| 2001 | Gosford ParkMovie | Elsie | 34 |
| 2000 | The Luzhin DefenceMovie | Natalia Katkov | 33 |
| 1999 | Cradle Will RockMovie | Olive Stanton | 32 |
| 1999 | Angela's AshesMovie | Angela McCourt | 32 |
| 1999 | The Early ShowSeries | Self | 32 |
| 1998 | Hilary and JackieMovie | Jackie du Pré | 31 |
| 1997 | The BoxerMovie | Maggie Hamill | 30 |
| 1996 | Breaking the WavesMovie | Bess McNeill | 29 |
| 1991 | PerformanceSeries | Rosalie | 24 |
| 1953 | The OscarsSeries | Self | — |