Olivia Williams
- Another End
2024 Juliette
- The Trouble with Jessica
2024 Beth
- Pigs
2024 Mum
- The Impact
2022 The President
- My Name Is Leon
2022 Sylvia
- The Father
2020 The Woman
- Nyet!
2019 Mrs. Pyke
- Victoria & Abdul
2017 Baroness Churchill
- National Theatre Archive: Mosquitoes
2017 Alice
- The Escape
2017 Sarah
- The White King
2016 Sophia (voice)
- Man Up
2015 Hilary
- Emma, Change the Locks
2015 Emma
- Sabotage
2014 Caroline
- Maps to the Stars
2014 Cristina Weiss
- Salting the Battlefield
2014 Belinda Kay
- Seventh Son
2014 Mam Ward
- Altar
2014 Meg
- Magpie
2014 The Woman
- Justin and the Knights of Valour
2013 Queen (voice)
- The Last Days on Mars
2013 Kim Aldrich
- The Guest
2013 Marguerite
- Now Is Good
2012 Mother
- Anna Karenina
2012 Countess Vronsky
- Hyde Park on Hudson
2012 Eleanor Roosevelt
- Hanna
2011 Rachel
- Wild Bill
2011 Kelly
- Collaborator
2011 Emma Stiles
- The Ghost Writer
2010 Ruth Lang
- Sex & Drugs & Rock & Roll
2010 Betty Dury
- An Education
2009 Miss Stubbs
- Flashbacks of a Fool
2008 Grace Scott
- Miss Austen Regrets
2008 Jane Austen
- Broken Lines
2008 Zoe
- Damage
2007 Michelle Cahill
- Krakatoa: The Last Days
2006 Johanna Beijerinck
- X-Men: The Last Stand
2006 Dr. Moira MacTaggert (uncredited)
- Tara Road
2005 Ria
- Valiant
2005 Victoria (voice)
- Agatha Christie: A Life in Pictures
2004 Agatha Christie
- The Heart of Me
2004 Madeleine
- The Hotel In Amsterdam
2004 Annie
- To Kill a King
2003 Lady Anne Fairfax
- Peter Pan
2003 Mary Darling
- Below
2002 Claire
- The Body
2001 Sharon Golban
- Lucky Break
2001 Annabel
- The Man from Elysian Fields
2001 Andrea
- Four Dogs Playing Poker
2000 Audrey
- Born Romantic
2000 Eleanor
- Dead Babies
2000 Diana
- The Sixth Sense
1999 Anna Crowe
- Rushmore
1998 Rosemary Cross
- The Postman
1997 Abby
- Emma
1996 Jane Fairfax
