Credits

• 2024 · Wicked Little Letters as Mabel
• 2022 · Remembers… as Self
• 2017 · Paddington 2 as Madame Kozlova
• 2016 · The Crown as Queen Mary
• 2015 · Rosamunde Pilcher: Fighting for Her Family as Catherine Maier
• 2014 · Magic in the Moonlight as Aunt Vanessa
• 2013 · Beautiful Creatures as Emmaline Duchannes
• 2011 · Rosamunde Pilcher's Shades of Love as Violet Aird
• 2010 · Upstairs Downstairs as Maud, Lady Holland
• 2010 · Robin Hood as Eleanor of Aquitaine
• 2008 · Last Chance Harvey as Maggie Walker
• 2008 · Ballet Shoes as Madame Fidolia
• 2007 · Cranford as Miss Deborah Jenkyns
• 2007 · The Graham Norton Show as Self
• 2006 · Scenes of a Sexual Nature as Iris
• 2006 · Ask the Dust as Mrs. Hargraves
• 2004 · Agatha Christie's Marple as Lady Tressilian
• 2004 · Doc Martin as Ruth Ellingham
• 2004 · Vanity Fair as Miss Matilda Crawley
• 2003 · Cold Mountain as Maddy
• 2003 · What a Girl Wants as Jocelyn Dashwood
• 2002 · The Hours as Barbara in the Flower Shop
• 2001 · Gosford Park as Mrs. Croft
• 2001 · Women Talking Dirty as Emily Boyle
• 2001 · Richard & Judy as Self
• 2001 · Waking the Dead as Abigail Dusniak
• 2001 · Wit as Evelyn 'E.M' Ashford
• 2000 · David Copperfield as Jane Murdstone
• 2000 · Madame Bovary as Marie Louise
• 1998 · The Avengers as Alice
• 1997 · A Dance to the Music of Time as Brightman
• 1994 · Wolf as Mary
• 1991 · Performance as Mrs Maitland
• 1990 · Chillers as Mrs Waggoner
• 1989 · Agatha Christie's Poirot as Princess Dragomiroff
• 1988 · Talking Heads as Celia
• 1988 · The Modern World: Ten Great Writers as Virginia Woolf
• 1988 · The Modern World: Ten Great Writers as Reader
• 1987 · The Vision as Helen Marriner
• 1985 · Screen Two as Helen Marriner
• 1985 · Screen Two as Kitty Higdon
• 1983 · Shades of Darkness as Mrs. Rutledge
• 1982 · Smiley's People as Madame Ostrakova
• 1982 · Oliver Twist as Mrs. Mann
• 1977 · BBC2 Play of the Week as Vanity Fair
• 1974 · Affairs of the Heart as Kate Cookham
• 1971 · Upstairs, Downstairs as Lady Maud Holland
• 1967 · Half Hour Story as Her
• 1965 · BBC Play of the Month as Electra
• 1965 · BBC Play of the Month as Olga
• 1965 · BBC Play of the Month as Catherine Sloper
• 1965 · BBC Play of the Month as Titania
• 1964 · The Wednesday Play as The Girl
• 1964 · The Wednesday Play as Joan
• 1964 · The Wednesday Play as Mabel
• 1964 · The Wednesday Play as Woman
• 1964 · Theatre 625 as Eileen
• 1960 · An Age of Kings as Lady
• 1960 · An Age of Kings as Joan la Pucelle
• 1956 · Tony Awards as Self - Nominee
• 1944 · Golden Globe Awards as Self - Nominee
• Future · Bunker as
• 2023 · Siân Phillips at 90 as Self
• 2022 · Farewell Doc Martin as Self
• 2018 · Nothing Like a Dame as Self
• 2017 · Carnage: Swallowing the Past as Dorothy
• 2016 · ChickLit as Peggy Law
• 2012 · The Scapegoat as Lady Spence
• 2010 · Psychoville Halloween Special as Nurse Edwina Kenchington
• 2010 · Wild Target as Mother
• 2007 · Evening as Nachtschwester
• 2006 · The Feast of the Goat as Aunt Adelina
• 2004 · The Queen of Sheba's Pearls as
• 2003 · A Long Weekend in Pest and Buda as Amanda
• 2002 · The Mind and Times of Virginia Woolf as Narrator
• 2002 · The Making of Gosford Park as Self
• 2002 · Bertie and Elizabeth as Queen Mary
• 2001 · David Copperfield as Jane Murdstone
• 2000 · The Sleeper as Violet Moon
• 2000 · Easter Tales as The Mourner
• 1998 · Talking Heads 2 as
• 1995 · Jack & Sarah as Phil
• 1995 · Cold Comfort Farm as Judith Starkadder
• 1993 · The Maitlands as Mrs. May Maitland
• 1992 · The Lost Language of Cranes as Rose Benjamin
• 1991 · Let Him Have It as Lilian Bentley
• 1991 · A Room of One's Own as Virginia Woolf
• 1988 · Mountain Language as Elderly woman
• 1988 · T.S. Eliot's 'The Waste Land' as Reader
• 1987 · Roman Holiday as Countess
• 1987 · A Hazard of Hearts as Lady Harriet's Maid
• 1985 · Titus Andronicus as Queen Tamora
• 1985 · The Burston Rebellion as Kitty Higdon
• 1985 · A Better Class of Person as Nellie Osborne
• 1984 · Royal Variety Performance 1984 as
• 1983 · The Dresser as Madge
• 1983 · Bewitched as Mrs. Rutledge
• 1983 · Nelly's Version as Nelly
• 1981 · Celebrity Playhouse as Stella Kirby
• 1981 · Sons and Lovers as Gertrude Morel
• 1981 · Sons and Lovers as Gertrude Morel
• 1978 · She Fell Among Thieves as Vanity Fair
• 1977 · Raku Fire as
• 1977 · Equus as Hesther Saloman
• 1976 · I Don't Want to Be Born as Sister Albana
• 1974 · The Lady's Not for Burning as Jennet Jourdemayne
• 1974 · Electra as Electra
• 1974 · The Lady from the Sea as Ellida
• 1972 · The Duchess of Malfi as Duchess
• 1971 · A Midsummer Night's Dream as Titania
• 1971 · Stage 2 as The Duchess of Malfi
• 1970 · The Three Sisters as Olga
• 1970 · Solo as
• 1969 · Double Bill as Woman
• 1969 · W. Somerset Maugham as Leslie Crosbie
• 1969 · W. Somerset Maugham as Olive Hardy
• 1968 · Nothing's Ever Over as Her
• 1968 · Inadmissible Evidence as Shirley
• 1966 · The Big Man Coughed and Died as The Girl
• 1965 · Fable as Joan
• 1964 · The Massingham Affair as Charlotte Verney
• 1961 · The Square as The Girl
• Future · The Lives of Animals as Elizabeth Costello