• The Holiday (2006) .... Iris
• Flushed Away (2006) (voice) .... Rita
• All the King's Men (2006) .... Anne Stanton
• Little Children (2006) .... Sarah Pierce
• Romance & Cigarettes (2005) .... Tula
• Finding Neverland (2004) .... Sylvia Llewelyn Davies
• Pride (2004) (TV) (voice) .... Suki
• Eternal Sunshine of the Spotless Mind (2004) .... Clementine Kruczynski
• The Life of David Gale (2003) .... Bitsey Bloom
• Plunge: The Movie (2003) .... Clare
• Iris (2001) .... Young Iris Murdoch
• Christmas Carol: The Movie (2001) (voice) .... Belle
• Enigma (2001) .... Hester Wallace
• War Game (2001) (voice) .... Mum/Annie
• Quills (2000) .... Madeleine 'Maddy' LeClerc
• Holy Smoke (1999) .... Ruth Barron
• Faeries (1999) (voice) .... Brigid
• Hideous Kinky (1998) .... Julia
• Titanic (1997) .... Rose DeWitt Bukater
• Hamlet (1996) .... Ophelia
• Jude (1996) .... Sue Bridehead
• Sense and Sensibility (1995) .... Marianne Dashwood
• A Kid in King Arthur's Court (1995) .... Princess Sarah
• Heavenly Creatures (1994) .... Juliet Hulme
• Anglo Saxon Attitudes (1992) (TV) .... Caroline Jenington
• Shrinks (1990) (TV)