- The Miracle Club
2023 Lily Fox
- Downton Abbey: A New Era
2022 Violet Crawley
- A Boy Called Christmas
2021 Aunt Ruth
- Downton Abbey
2019 Violet Crawley
- Sherlock Gnomes
2018 Lady Bluebury (voice)
- Woolf Works
2017 Reading (voice)
- The Second Best Exotic Marigold Hotel
2015 Muriel Donnelly
- The Lady in the Van
2015 Miss Shepherd
- My Old Lady
2014 Mathilde Girard
- National Theatre Live: 50 Years on Stage
2013 Mrs. Sullen
- The Best Exotic Marigold Hotel
2012 Muriel Donnelly
- Quartet
2012 Jean Horton
- Harry Potter and the Deathly Hallows: Part 2
2011 Minerva McGonagall
- Gnomeo & Juliet
2011 Lady Bluebury (voice)
- Nanny McPhee and the Big Bang
2010 Mrs. Docherty
- Harry Potter and the Half-Blood Prince
2009 Minerva McGonagall
- From Time to Time
2009 Linnet
- Harry Potter and the Order of the Phoenix
2007 Minerva McGonagall
- Becoming Jane
2007 Lady Gresham
- Capturing Mary
2007 Mary Gilbert
- The Best of The Tony Awards: The Plays
2006 Lettice Douffet (segment "Lettice and Lovage")
- Harry Potter and the Goblet of Fire
2005 Minerva McGonagall
- Keeping Mum
2005 Grace Hawkins
- Harry Potter and the Prisoner of Azkaban
2004 Minerva McGonagall
- Ladies in Lavender
2004 Janet
- My House in Umbria
2003 Mrs. Emily Delahunty
- Harry Potter and the Chamber of Secrets
2002 Minerva McGonagall
- Harry Potter and the Philosopher's Stone
2001 Professor McGonagall
- Gosford Park
2001 Constance Trentham
- The Last September
2000 Lady Myra Naylor
- Tea with Mussolini
1999 Lady Hester Random
- All the King's Men
1999 Queen Alexandra
- Curtain Call
1998 Lily Marlowe
- Washington Square
1997 Aunt Lavinia Penniman
- The First Wives Club
1996 Gunilla Garson Goldberg
- Richard III
1995 Duchess of York
- The Secret Garden
1993 Mrs. Medlock
- Sister Act 2: Back in the Habit
1993 Mother Superior
- Suddenly, Last Summer
1993 Violet Venable
- Sister Act
1992 Mother Superior
- Memento Mori
1992 Mrs Mabel Pettigrew
- Hook
1991 Granny Wendy
- Romeo.Juliet
1990 Rosaline (voice)
- Talking Heads
1988
- The Lonely Passion of Judith Hearne
1987 Judith Hearne
- A Room with a View
1986 Charlotte Bartlett
- A Private Function
1984 Joyce Chilvers
- Lily in Love
1984 Lily Wynn
- Mrs. Silly
1983 Mrs Silly
- Better Late Than Never
1983 Miss Anderson
- Evil Under the Sun
1982 Daphne Castle
- The Missionary
1982 Lady Isabel Ames
- Clash of the Titans
1981 Thetis
- Quartet
1981 Lois Heidler
- Death on the Nile
1978 Miss Bowers
- California Suite
1978 Diana Barrie
- Murder by Death
1976 Dora Charleston
- Love and Pain and the Whole Damn Thing
1973 Lila Fisher
- Travels with My Aunt
1972 Augusta Bertram
- The Millionairess
1972 Epifania
- The Merchant of Venice
1972 Portia
- Oh! What a Lovely War
1969 Music Hall Star
- The Prime of Miss Jean Brodie
1969 Jean Brodie
- Hot Millions
1968 Patty Terwilliger Smith
- The Honey Pot
1967 Sarah Watkins
- Much Ado About Nothing
1967 Beatrice
- Othello
1965 Desdemona
- Young Cassidy
1965 Nora
- The Pumpkin Eater
1964 Philpot
- The V.I.P.s
1963 Miss Mead
- Go to Blazes
1962 Chantal
- Nowhere to Go
1958 Bridget Howard
- Child in the House
1956 Party Guest (uncredited)
