Acting

2023		The Miracle Club as Lily Fox
2023		Mad About the Boy: The Noël Coward Story as Self (archive footage)

2022		A German Life as Brunhilde Pomsel
2022		The Marvellous Maggie Smith: A Celebration as Herself
2022		Downton Abbey: A New Era as Violet Crawley

2021

as Aunt Ruth

2019		Return to Downton Abbey: A Grand Event
2019		Downton Abbey as Violet Crawley

2018		Nothing Like a Dame as Herself
2018		Sherlock Gnomes as Lady Bluebury (voice)

2017		Rod Taylor: Pulling No Punches as Herself
2017		Woolf Works as Reading (voice)

2016

as Herself

2015		The Lady in the Van as Miss Shepherd
2015		The Second Best Exotic Marigold Hotel as Muriel Donnelly

2014

as Mathilde Girard

2013		National Theatre Live: 50 Years on Stage as Mrs. Sullen
2013		Talking Pictures (1 episode) as Self (archive footage)

2012		Quartet as Jean Horton
2012		The Best Exotic Marigold Hotel as Muriel Donnelly
2012		Honest Trailers (1 episode) as Minerva McGonagall (archive footage)

2011		Harry Potter and the Deathly Hallows: Part 2 as Minerva McGonagall
2011		Gnomeo & Juliet as Lady Bluebury (voice)

2010		Downton Abbey (47 episodes) as Violet Crawley
2010		From Time to Time as Linnet
2010		Nanny McPhee and the Big Bang as Agatha Rose Doherty

2009

as Minerva McGonagall

2008

as Self (archival footage)

2007		Capturing Mary as Mary Gilbert
2007		Harry Potter and the Order of the Phoenix as Minerva McGonagall
2007		Becoming Jane as Lady Gresham
2007		The Graham Norton Show (1 episode) as Self

2006		Francesco's Italy: Top to Toe (1 episode)
2006		The Best of The Tony Awards: The Plays as Lettice Douffet (segment "Lettice and Lovage")

2005		Keeping Mum as Grace Hawkins
2005		Harry Potter and the Goblet of Fire as Minerva McGonagall

2004		Ladies in Lavender as Janet
2004		The Magic Touch of Harry Potter as Self
2004		Harry Potter and the Prisoner of Azkaban as Minerva McGonagall

2003

as Mrs. Emily Delahunty

2002		Harry Potter and the Chamber of Secrets as Minerva McGonagall
2002		The Making of 'Gosford Park' as Self (uncredited)
2002		Divine Secrets of the Ya-Ya Sisterhood as Caro Bennett

2001		Harry Potter and the Philosopher's Stone as Minerva McGonagall
2001		Gosford Park as Constance Trentham

2000

as Lady Myra Naylor

1999		David Copperfield (2 episodes) as Betsey Trotwood
1999		All the King's Men as Queen Alexandra
1999		Tea with Mussolini as Lady Hester Random

1998

as Lily Marlowe

1997

as Aunt Lavinia Penniman

1996

as Gunilla Garson Goldberg

1995

as Duchess of York

1993		Sister Act 2: Back in the Habit as Mother Superior
1993		The Secret Garden as Mrs. Medlock
1993		Suddenly, Last Summer as Violet Venable

1992		Sister Act as Mother Superior
1992		Memento Mori as Mrs Mabel Pettigrew

1991

as Granny Wendy

1990

as Rosaline (voice)

1988		Bed Among the Lentils as Susan
1988		Talking Heads (1 episode) as Susan
1988		Talking Heads

1987

as Judith Hearne

1986

as Charlotte Bartlett

1984		A Private Function as Joyce Chilvers
1984		Lily in Love as Lily Wynn

1983		Mrs. Silly as Mrs Silly
1983		Better Late Than Never as Miss Anderson

1982		The Missionary as Lady Isabel Ames
1982		Evil Under the Sun as Daphne Castle
1982		The Making of Agatha Christie's 'Evil Under the Sun' as Self / Daphne Castle

1981		Quartet as Lois Heidler
1981		Entertainment Tonight (1 episode) as Self
1981		Clash of the Titans as Thetis

1978		California Suite as Diana Barrie
1978		Death on the Nile as Miss Bowers
1978		Death on the Nile: Making of Featurette as Miss Bowers (archive footage)

1976

as Dora Charleston

1973

as Lila Fisher

1972		Travels with My Aunt as Augusta Bertram
1972		The Millionairess as Epifania
1972		The Merchant of Venice as Portia

1971

(1 episode) as Violet Venable

1969		Oh! What a Lovely War as Music Hall Star
1969		The Prime of Miss Jean Brodie as Jean Brodie

1968

as Patty Terwilliger Smith

1967		The Carol Burnett Show (1 episode) as Self (1 episode) as Self - Guest (1 episode) as Self - Guest / Various Characters
1967		The Honey Pot as Sarah Watkins
1967		Much Ado About Nothing as Beatrice

1965		Othello as Desdemona
1965		BBC Play of the Month (1 episode) as Epifania
1965		Young Cassidy as Nora
1965		Olivier Talks About Othello as Archive Footage

1964

as Philpot

1963

as Miss Mead

1962

as Chantal

1958

as Bridget Howard

1956		Child in the House as Party Guest (uncredited)
1956		Tony Awards (1 episode) as Self - Presenter

1953

(2 episodes) as Self