| Year | Title | Role | Notes |
| 2002–2003 | MTV | Presenter | |
| 2003–2005 | Total Request Live | |
| 2005, 2007, 2010 | Big Brother's Big Mouth | Guest presenter | |
| 2007–2008 | I'm a Celebrity.. Me Out of Here! NOW! | Co-presenter | 2 series |
| 2008–2014 | The Hot Desk | Presenter | Various episodes |
| 2008 | Red Bull Flugtag | Co-presenter | |
| 27 Dresses: Movie Special | Presenter | |
| 2010 | Live from Studio Five | Co-presenter | |
| The Real Hustle | Herself | |
| Big Brother's Little Brother | Co-presenter | 1 series |
| 2011–2015 | Celebrity Big Brother's Bit on the Side | 8 series |
| 2011–2014 | Big Brother's Bit on the Side | 4 series |
| 2012–2014, 2018 | This Morning | "Hub" presenter | Regular |
| 2012–2014, 2018, 2023–present | Stand-in presenter | 11 episodes |
| 2012–2013, 2021 | Loose Women | Anchor | 8 episodes |
| 2012–2013 | Girlfriends | Presenter | 2 series |
| 2013 | Speidi: Scandal, Secrets & Surgery! | Narrator | One-off episode |
| Prize Island | Co-presenter | 1 series |
| The Paul O'Grady Show | Guest presenter | 1 episode |
| 2013–2018 | Big Brother | Presenter | 6 series |
| 2013–2018 | Celebrity Big Brother | 11 series |
| 2014–present | The Voice | 10 Series |
| 2015 | Reality Bites | Team captain | 1 series |
| Prized Apart | Co-presenter | 1 series |
| 2016 | What Would Be Your Miracle? | Presenter | 1 series |
| BRITs Icon: Robbie Williams | Narrator | One-off episode |
| 2017 | BRIT Awards | Co-presenter | 37th event |
| 2017–2023 | The Voice Kids | Presenter | 7 series |
| 2017 | Your Song | One-off episode |
| 2017–2018 | The Keith & Paddy Picture Show | Janine Melnitz/Rizzo | 2 episodes |
| 2018–present | Emma Willis: Delivering Babies | Presenter | Documentary series |
| 2019 | Comic Relief | Presenter | Telethon |
| Pants on Fire | |
| 2019–2021 | The Circle | Series 2 - Series 3 |
| 2021 | The Celebrity Circle | Series 1 |
| 2021-Present | Cooking with the Stars | Co-presenter | Series 1-present |
| 2021 | Emma and AJ Get to Work | Co-presenter | Alongside AJ Odudu |
| 2022 | The Great Celebrity Bake Off for SU2C | Herself | Series 5; episode 1 |
| The Great Home Transformation | Co-presenter | With Nick Grimshaw |
| 2023, 2024 | The World Cook | Co-presenter | With Fred Sirieix |
| 2023 | Matt Willis: Fighting Addiction | Herself | BBC documentary |
| Love Is Blind | Co-presenter | |
| 2024 | Team GB's Homecoming by The National Lottery | Co-host | With Vernon Kay |
| Swiped: The School That Banned Smartphones | Co-presenter | With Matt Willis |
| 2025 | Love Is Blind | Co-presenter | |
| Change your Mind, Change your Life | Co-presenter | With Matt Willis |
| 2026 | Celebrity Sabotage | Herself | With Matt Willis |
