- Ladies First
2026 Felicity Chase
- Sense and Sensibility
2026 Mrs. Jennings
- The Education of Jane Cumming
2026 Lady Cumming Gordon
- Park Avenue
2025 Kit
- Hot Milk
2025 Rose
- Echo Valley
2025 Leslie Oliver
- IF
2024 Grandmother
- That Christmas
2024 Ms. Trapper (voice)
- Andor: A Disney+ Day Special Look
2022 Maarva Andor (archive footage) (uncredited)
- Russia vs. the World
2021 Narrator
- Ammonite
2020 Elizabeth Philpot
- Enola Holmes
2020 Miss Harrison
- Kindred
2020 Margaret
- Out of Innocence
2019 Catherine Flynn
- The Christmas Letter
2019 Ms. Broom (voice)
- Colette
2018 Sido
- Lizzie
2018 Abby Borden
- The Hippopotamus
2017 Anne Logan
- The White King
2016 Kathrin Fitz
- Pixels
2015 Prime Minister (uncredited)
- The English Teacher
2013 Narrator
- Tchaikovsky: Eugene Onegin
2013 Director
- The Tree of Life
2011 Grandmother
- Harry Potter and the Deathly Hallows: Part 1
2010 Petunia Dursley
- National Theatre Live: London Assurance
2010 Lady Gay Spanker
- We Believed
2010 Emilie Ashurst
- Dorian Gray
2009 Agatha
- Harry Potter and the Order of the Phoenix
2007 Petunia Dursley
- Fracture
2007 Judge Robinson
- Mitchell & Kenyon in Ireland
2007 Narrator (voice)
- The Black Dahlia
2006 Ramona Linscott
- Catch and Release
2006 Mrs. Ellen Douglas
- Ebb and Flo
2005 Narrator
- Harry Potter and the Prisoner of Azkaban
2004 Petunia Dursley
- Harry Potter and the Chamber of Secrets
2002 Petunia Dursley
- Doctor Sleep
2002 Catherine Lebourg
- Harry Potter and the Philosopher's Stone
2001 Aunt Petunia Dursley
- The Triumph of Love
2001 Leontine
- Mind Games
2001 Frances O'Neil
- The Last September
2000 Marda Norton
- RKO 281
1999 Hedda Hopper
- The Butcher Boy
1998 Mrs. Nugent
- The Avengers
1998 Father
- Titanic Town
1998 Sue, TV Interviewer (Uncredited Cameo)
- Richard II
1997 Richard II
- Anna Karenina
1997 Lydia
- Jane Eyre
1996 Mrs. Reed
- Persuasion
1995 Mrs. Croft
- The Waste Land
1995 Herself
- Undercover Blues
1993 Novacek
- Maria's Child
1993 Pauline
- Hedda Gabler
1993 Hedda Gabler
- Super Mario Bros.
1993 Lena
- Twelfth Night
1992 Viola (voice)
- London Kills Me
1991 Headley
- Mountains of the Moon
1990 Isabel
- 3 Men and a Little Lady
1990 Miss Lomax
- My Left Foot: The Story of Christy Brown
1989 Dr. Eileen Cole
- Love Song
1985 Young Deirdre Walters
- Sacred Hearts
1985 Sister Felicity
- The Man Who Shot Christmas
1984 Laura
- Fireworks for Elspeth
1983 Elspeth
- Monstrous Beauty
Aphra Ben
- The Rising: 1916
Countess Markievicz
