- Glenrothan
2026 Jess
- The Mandalorian and Grogu
2026 The Anzellans (voice)
- I Swear
2025 Heather
- Bridget Jones: Mad About the Boy
2025 Jude
- Elio
2025 Ooooo (voice)
- The Trouble with Jessica
2024 Sarah
- Blue
2024 Performer of the songs
- See How They Run
2022 Agatha Christie
- Greed
2019 Margaret
- Star Wars: The Rise of Skywalker
2019 Babu Frik (voice)
- How The Earth Must See Itself
2019 Narrator
- Stan & Ollie
2018 Lucille Hardy
- Okja
2017 Jennifer
- T2 Trainspotting
2017 Gail
- Never Steady, Never Still
2017 Judy
- Bridget Jones's Baby
2016 Jude
- On the Road
2016 Joe's Mum
- Tale of Tales
2015 Imma
- Urban Hymn
2015 Kate Linton
- The Caravan
2015 Elaine
- In Secret
2014 Suzanne
- Set Fire to the Stars
2014 Shirley
- Filth
2013 Bunty
- The Look of Love
2013 Rusty Humphries
- The Selkie's Lover
2013 The Raconteur (voice)
- Anna Karenina
2012 Opera House Wife
- Everyday
2012 Karen
- Treasure Island
2012 Meg Hawkins
- The Gruffalo's Child
2011 The Gruffalo's Child (voice)
- Meek's Cutoff
2011 Glory White
- Life During Wartime
2010 Joy Jordan
- The Nutcracker
2010 The Nutcracker (voice)
- May Contain: Nuts
2009 Alice
- Miss Pettigrew Lives for a Day
2008 Edythe Dubarry
- Wild Child
2008 Matron
- I Really Hate My Job
2007 Alice
- Wedding Belles
2007 Kelly
- Marie Antoinette
2006 Aunt Sophie
- Ma Boy
2006 Ali
- Harry Potter and the Goblet of Fire
2005 Moaning Myrtle
- A Cock and Bull Story
2005 Susannah / Shirley Henderson
- Yes
2005 Cleaner
- Frozen
2005 Kath
- Dirty Filthy Love
2005 Charlotte
- Einstein's Big Idea
2005 Mileva Maric
- The Taming of the Shrew
2005 Kate Minola
- Bridget Jones: The Edge of Reason
2004 Jude
- American Cousins
2003 Alice
- Fishy
2003 Glenda Sands
- AfterLife
2003 Ruby
- Intermission
2003 Sally
- Wilbur Wants to Kill Himself
2002 Alice
- Harry Potter and the Chamber of Secrets
2002 Moaning Myrtle
- 24 Hour Party People
2002 Lindsay
- Doctor Sleep
2002 Janet Losey
- Once Upon a Time in the Midlands
2002 Shirley
- Villa Des Roses
2002 Ella
- Bridget Jones's Diary
2001 Jude
- The Claim
2000 Annie
- Wonderland
1999 Debbie
- Topsy-Turvy
1999 Leonora Braham (Yum-Yum)
- Speak Like a Child
1998 Woman in Dream (uncredited)
- Bumping the Odds
1997 Lynette
- Trainspotting
1996 Gail
- Rob Roy
1995 Morag
- Salt on Our Skin
1992 Mary
- Dreaming
1991 Pauline McPherson
