Julia Davis
- The Toxic Avenger Unrated
2025 Kissy Sturnevan, his Associate
- The Fairy Moon
2025 The Operator
- Run Rabbit Run
2024 Gail
- Person of Interest
2024 Dr. Kate Shelley
- Gavin & Stacey: The Finale
2024 Dawn Sutcliffe
- My Massive Cock
2022 Narrator
- Nude Tuesday
2022 Writer
- The Clearing
2021 Deb
- Sing 2
2021 Linda Le Bon (voice)
- A Very British Scandal
2021 Maureen Guinness
- The Outlaws
2021 Rita
- Gavin & Stacey: A Special Christmas
2019 Dawn Sutcliffe
- Fighting with My Family
2019 Daphne
- Stath Lets Flats
2018 Kris
- The Shivering Truth
2018 (voice)
- Sally4Ever
2018 Director
- Camping
2018 Executive Producer
- Brakes
2017 Livy
- Phantom Thread
2017 Lady Baltimore
- Philip K. Dick's Electric Dreams
2017 Sally Morris
- Camping
2016 Director
- The Bird
2014 Mother
- Morning Has Broken
2014 Writer
- The Understudy
2014 Felicity
- Inside No. 9
2014 Felicity
- It's Kevin
2013 Various
- Psychobitches
2013 Writer
- Bad Sugar
2012 Daphne Cauldwell
- Uncle Wormsley's Christmas
2012 Mrs. Goodington
- Hunderby
2012 Writer
- Playhouse Presents
2012 Writer
- Arthur Christmas
2011 UNFITA OPS (voice)
- Black Mirror
2011 Judge Charity
- Cemetery Junction
2010 Mrs. Taylor
- Lizzie and Sarah
2010 Writer
- Four Lions
2010 Alice
- Come on Eileen
2010 Dee
- Chekhov Comedy Shorts
2010 Popova
- Little Crackers
2010 Director
- Steve Coogan: The Inside Story
2009 Writer
- 10 Minute Tales
2009 Overbearing Midwife
- Gavin & Stacey Christmas Special 2008
2008 Dawn Sutcliffe
- Persuasion
2007 Elizabeth Elliot
- For the Love of God
2007 Mother
- Gavin & Stacey
2007 Dawn Sutcliffe
- Confetti
2006 Counsellor
- Fear of Fanny
2006 Fanny Cradock
- Born Equal
2006 Sally
- Nathan Barley
2005 Honda Poppet
- Ideal
2005 Amanda With The Weird Eyes (Voice)
- AD/BC: A Rock Opera
2004 Ruth
- Sex Lives of the Potato Men
2004 Shelley
- Shaun of the Dead
2004 News Reporter (voice) (uncredited)
- I Am Not an Animal
2004 Claire the Rat (voice)
- Nighty Night
2004 Producer
- The Alan Clark Diaries
2004 Jenny Easterbrook
- Appointment with Dr. Terrible
2003 Interviewee – Actor
- Hello, Friend
2003 (voice)
- Love Actually
2003 Nancy the Caterer
- The Office: The Christmas Special
2003 Gillian (voice)
- Wilbur Wants to Kill Himself
2002 Moira
- The Parole Officer
2001 Insinuating Wife
- Dr Terrible's House of Horrible
2001 Stephanie Wise
- Jam
2000 Various
- Human Remains
2000 Various Characters
- Coming Soon
1999 Kim
- Coming Soon
1999
- People Like Us
1999 Lisa Bell
- Lima: Breaking the Silence
1999 Line Producer
- Big Train
1998
- I'm Alan Partridge
1997 Kate Fitzgerald
- Pretend with Pibble
Narrator
