Filmography84 titles
| Year | Title | Character | Age at release |
|---|---|---|---|
| 2026 | ShelterMovie | Prime Minister Fordham | 76 |
| 2026 | PONIESSeries | Manya Caplan | 76 |
| 2026 | YouthSeries | Livonia Arbor | 76 |
| 2025 | Playing Gracie DarlingSeries | Pattie Grey | 75 |
| 2024 | The Life and Deaths of Christopher LeeMovie | Self | 74 |
| 2024 | And Mrs.Movie | Lord Chief Justice Amanda Vaughn | 74 |
| 2023 | SiloSeries | Martha Walker | 73 |
| 2023 | On The LineMovie | Shirley | 73 |
| 2022 | BurialMovie | Anna Marshall | 72 |
| 2022 | Your Christmas or Mine?Movie | Iris | 72 |
| 2021 | The CleanerSeries | Lisa | 71 |
| 2021 | The Last DuelMovie | Nicole de Carrouges | 71 |
| 2021 | Doctor Who: Revolution of the DaleksMovie | Jo Patterson | 71 |
| 2021 | Alexander Pope: Rediscovering a GeniusMovie | Duchess of Marlborough | 71 |
| 2020 | Ted LassoSeries | Deborah | 70 |
| 2020 | BelgraviaSeries | Caroline, Countess of Brockenhurst | 70 |
| 2020 | The EndSeries | Edie Henley | 70 |
| 2019 | RocketmanMovie | Helen Piena | 69 |
| 2019 | The Spanish PrincessSeries | Margaret Beaufort | 69 |
| 2018 | SuccessionSeries | Lady Caroline Collingwood | 68 |
| 2018 | Patrick MelroseSeries | Princess Margaret | 68 |
| 2018 | My Dinner with HervéMovie | Baskin | 68 |
| 2018 | Killing EveSeries | Dasha Duzran | 68 |
| 2017 | Tate Britain's Great Art WalksSeries | Self | 67 |
| 2016 | The CrownSeries | Clemmie Churchill | 66 |
| 2016 | Shakespeare Live! From the RSCMovie | Self - Performer | 66 |
| 2016 | FlowersSeries | Hylda | 66 |
| 2015 | Wolf HallSeries | Margaret Pole | 65 |
| 2015 | Star Wars: The Force AwakensMovie | Dr. Kalonia | 65 |
| 2015 | Documentary Now!Series | Edwina | 65 |
| 2015 | London SpySeries | Claire | 65 |
| 2015 | Suite FrançaiseMovie | Viscountess Montmort | 65 |
| 2012 | Call the MidwifeSeries | Sister Ursula | 62 |
| 2012 | A Royal AffairMovie | Augusta - Prinsesse af Wales | 62 |
| 2012 | The Domino EffectMovie | Ann | 62 |
| 2012 | The Wedding VideoMovie | Alex | 62 |
| 2011 | Black MirrorSeries | Judith Keyworth | 61 |
| 2011 | Rosamunde Pilcher's Shades of LoveSeries | Isobel Balmerino | 61 |
| 2010 | Downton AbbeySeries | Lady Shackleton | 60 |
| 2009 | Law & Order: UKSeries | Natalie Chandler | 59 |
| 2009 | The Young VictoriaMovie | Queen Adelaide | 59 |
| 2009 | A Short Stay in SwitzerlandMovie | Clare | 59 |
| 2009 | HunterSeries | ACC Jenny Griffin | 59 |
| 2008 | 10 Days to WarSeries | Anne Campbell | 58 |
| 2008 | Broken LinesMovie | Leah | 58 |
| 2008 | Abraham's PointMovie | Pani Nemeth | 58 |
| 2007 | AtonementMovie | Emily Tallis | 57 |
| 2006 | ChromophobiaMovie | Penelope Aylesbury | 56 |
| 2004 | Agatha Christie's MarpleSeries | Duchess | 54 |
| 2004 | Who Do You Think You Are?Series | Self | 54 |
| 2004 | LondonSeries | Virginia Woolf - Novelist | 54 |
| 2003 | Bright Young ThingsMovie | Lady Maitland | 53 |
| 2003 | Frankenstein: Birth of a MonsterMovie | Mary Wollstonecraft | 53 |
| 2002 | SpooksSeries | Deep Throat | 52 |
| 2002 | Villa Des RosesMovie | Olive Burrell | 52 |
| 2002 | George Eliot: A Scandalous LifeMovie | Mary Ann Evans / George Eliot | 52 |
| 2001 | Waking the DeadSeries | Annie Keel | 51 |
| 2001 | MessiahSeries | Professor Robb | 51 |
| 2001 | MacbethMovie | Lady Macbeth | 51 |
| 2000 | Black CabSeries | Jane | 50 |
| 1999 | The Magical Legend of the LeprechaunsSeries | Queen Morag | 49 |
| 1998 | Unfinished BusinessSeries | Amy | 48 |
| 1997 | Midsomer MurdersSeries | Diana Davenport | 47 |
| 1997 | ArthouseSeries | Self | 47 |
| 1997 | Keep the Aspidistra FlyingMovie | Julia Comstock | 47 |
| 1997 | A Dance to the Music of TimeSeries | Mildred | 47 |
| 1996 | Dalziel and PascoeSeries | Mary Waddell | 46 |
| 1995 | Sense and SensibilityMovie | Fanny Ferrars Dashwood | 45 |
| 1993 | Jean Renoir: Part One - From La Belle Époque to World War IIMovie | Narrator (voice) | 43 |
| 1993 | The Hour of the PigMovie | Jeannine Martin | 43 |
| 1991 | PerformanceSeries | Dorothy Maitland | 41 |
| 1991 | The Men's RoomSeries | Charity Walton | 41 |
| 1991 | AshendenSeries | Giulia Lazzari | 41 |
| 1988 | Omnibus: Caryl ChurchillMovie | Player in extracts from 'Cloud 9' and 'Top Girls' | 38 |
| 1987 | Inspector MorseSeries | Dr. Esther Martin | 37 |
| 1987 | A Dorothy L. Sayers MysterySeries | Harriet Vane | 37 |
| 1985 | Screen TwoSeries | Amelia Cleverly | 35 |
| 1985 | Turtle DiaryMovie | Harriet Sims | 35 |
| 1985 | Girls On TopSeries | R.S.C. Actress 3 | 35 |
| 1985 | The Good FatherMovie | Emmy Hooper | 35 |
| 1985 | The PriceSeries | Frances Carr | 35 |
| 1984 | ReflectionsMovie | Ottilie Garinger | 34 |
| 1981 | The Cherry OrchardMovie | Varya | 31 |
| 1980 | The Imitation GameMovie | — | 30 |