| Year | Title | Role | Notes |
| 2002 | Phoenix Nights | Dawn | Episode: "Stars in their Eyes"; uncredited |
| 2009 | Mr. Right | Blue Team Woman | |
| 2010 | Robert's Web | Herself | 4 episodes, fictionalized, as part of Two Episodes of Mash |
| 2011–2012 | Mount Pleasant | Talia | 12 episodes |
| 2012 | The Royal Bodyguard | Sharon | Episode: "Bullets over Broad Street" |
| Games On | Elaine Price | Episode: "XXXL" |
| The Work Experience | Susan Butler | 6 episodes |
| Him & Her | Gina | 3 episodes |
| 2012–2014 | Live at the Electric | Herself | 24 episodes, fictionalized, as part of Two Episodes of Mash |
| 2013 | Pat & Cabbage | Nicola | 6 episodes |
| Freshers | Narrator | |
| 2013–2020 | Charlie Brooker's Weekly Wipe | Philomena Cunk | 18 episodes, 6 specials |
| 2014 | Utopia | Tess | 2 episodes |
| The Mimic | Psychoanalyst | Series 2: Episode 3 |
| Roisin Conaty: Onwards and Onwards | Book Group Organiser | Episode 3: "Promises" |
| 2015 | Uncle | Suzan | Series 2: Episode 5 |
| So Awkward | Mrs Lazarus | Series 1: Episode 9 |
| Three Kinds of Stupid | Mittens | |
| 2016 | Cunk on Shakespeare | Philomena Cunk | |
| Rovers | Mandy | 6 episodes |
| We the Jury | Olivia | Pilot episode |
| Damned | Phoebe Ravenscroft | Series 1: Episode 4 |
| Cunk on Christmas | Philomena Cunk | |
| 2016–2022 | Motherland | Liz | 20 episodes |
| 2018 | Cunk on Britain | Philomena Cunk | 5 episodes |
| Chris P. Duck | Tracey | 6 episodes |
| 2018–2019 | The Archiveologists | | Voice only; 6 episodes; also writer |
| 2019 | The Cockfields | Donna | 3 episodes |
| Cunk & Other Humans on 2019 | Philomena Cunk | 6 five minute episodes |
| 2019–2021 | Frayed | Fiona | 12 episodes |
| 2019–2022 | After Life | Kath | 18 episodes |
| 2019–present | Mandy | Mandy Carter | 26 episodes; also creator, writer, director and executive producer |
| 2021 | Elliott from Earth | 105E | Voice only; 2 episodes |
| Intelligence | Charlotte | 3 episodes |
| 2022 | Inside No. 9 | Donna | Series 7: Episode 1 |
| The Sandman | Gryphon | Voice only; Episode: "Dream of a Thousand Cats" |
| Cunk on Earth | Philomena Cunk | |
| Our Boarding School | Narrator | |
| 2024 | The Completely Made-Up Adventures of Dick Turpin | Maureen | Episode 4: "Curse of the Reddlehag" |
| The Underdog: Josh Must Win | Narrator | |
| Cunk on Life | Philomena Cunk | One-off extended special |
| 2025 | The Power of Parker | Mic | 3 Episodes |
| Kiff | Secretary Mom | Voice role, Season 2 Episode 22: "PS You're Fired" |
| Phineas and Ferb | Chowdina | Voice role, Season 5 Episode 33: "Bread Bowl Hot Tub" |
| 2026 | LOL: Last One Laughing UK | Herself | Contestant; Series 2 |
| VisionQuest | TBA | Post-production |
| TBA | Ann Droid (w/t) | Linda | Co-writer & executive producer |
