Rachel Riley is a British television presenter. She co-presents the Channel 4 daytime puzzle show Countdown and its comedy spin-off 8 Out of 10 Cats Does Countdown. She is a mathematics graduate. Her television debut came when she joined Countdown aged 22
| Series | It's Not Rocket Science | 2016 |
| Episode |
Countdown Series 86 Grand Final (#7921) |
2022 |
| Episode |
Countdown Series 86 Semifinal Game 2 (#7920) |
2022 |
| Episode |
Richard Osman's House of Games Rachel Riley, JB Gill, Katie Derham, and Richard Herring (5/5) |
2018 |
| Episode |
Celebrity Juice Johnny Vegas, Raye, Aitch, Rachel Riley |
2022 |
| Episode |
Top Gear Episode 1 |
2013 |
| Episode |
Michael McIntyre's The Wheel Episode 7 |
2021 |
| Episode |
Backchat with Jack Whitehall and His Dad World Cup Special - James Corden, Harry Redknapp, Henning Wehn, Rachel Riley |
2014 |
| Episode |
Michael McIntyre's Big Show Episode 5 |
2024 |
| Episode |
Dara O Briain's Go 8 Bit Russell Howard vs Rachel Riley |
2016 |
| Episode |
Michael McIntyre's The Wheel Episode 7 |
2024 |
| Episode |
The Mad Bad Ad Show Cereal: Rachel Riley and Chris Ramsey |
2012 |
| Episode |
8 Out of 10 Cats Alex Reid, Russell Kane, Rachel Riley, Josh Widdicombe |
2011 |
| Episode |
Complaints Welcome Episode 2 |
2021 |
| Episode |
The Crystal Maze (2017) Celebrity Special (3) |
2018 |
| Episode |
Virtually Famous Episode 1 |
2014 |
| Episode |
8 Out of 10 Cats Joe Wilkinson, Rachel Riley, Chris Ramsey, Tina Malone |
2013 |
| Episode |
West:Word Virtù e Fortuna |
2018 |
| Episode |
Room 101 Brendan O'Carroll, Bob Mortimer, Rachel Riley |
2015 |
| Episode |
8 Out of 10 Cats Rob Beckett, David Hasselhoff, Justin Moorhouse, Rachel Riley |
2012 |
| Episode |
Through the Keyhole (2013) Shane Richie, Rachel Riley, Alex James |
2018 |
| Episode |
Would I Lie to You? At Christmas (2014) |
2014 |
| Episode |
Rob Beckett's Playing for Time Rachel Riley |
2018 |
| Episode |
The Jonathan Ross Show Jack Whitehall, Ralph Feinnes, Rachel Riley, Lizzo |
2019 |
| Episode |
Richard Osman's House of Games Rachel Riley, JB Gill, Katie Derham, and Richard Herring (1/5) |
2018 |
| Episode |
Jon & Lucy's Odd Couples Episode 1 |
2023 |
| Episode |
24 Hours to Go Broke Greece |
2014 |
| Episode |
The Chris McCausland Show Rachel Riley, Sea Girls |
2024 |
| Episode |
Play to the Whistle Episode 1 |
2017 |
| Episode |
How To Be Epic @ Everything Episode 6 |
2014 |
| Episode |
8 Out of 10 Cats Nick Grimshaw, Peter Serafinowicz, Rachel Riley, Daniel Sloss |
2011 |
| Episode |
Richard Osman's House of Games Rachel Riley, JB Gill, Katie Derham, and Richard Herring (2/5) |
2018 |
| Episode |
Fantasy Football League (2022) Chris McCausland / Rachel Riley |
2022 |
| Episode |
8 Out of 10 Cats Vernon Kay, Tim Minchin, Joe Wilkinson, Rachel Riley |
2011 |
| Episode |
Richard Osman's House of Games Rachel Riley, JB Gill, Katie Derham, and Richard Herring (3/5) |
2018 |
| Episode |
How To Be Epic @ Everything Episode 4 |
2014 |
| Episode |
Countdown Episode 5584 |
2012 |
| Episode |
8 Out of 10 Cats Reginald D. Hunter, Rachel Riley, Josh Widdicombe, Gemma Collins |
2012 |
| Episode |
8 Out of 10 Cats Sport Relief 2012 Special |
2012 |
| Episode |
8 Out of 10 Cats Louie Spence, Joe Lycett, Rachel Riley, David O'Doherty |
2012 |
| Episode |
Richard Osman's House of Games Rachel Riley, JB Gill, Katie Derham, and Richard Herring (4/5) |
2018 |
| Episode |
Room 101 Extra Storage: Brendan O'Carroll, Bob Mortimer, Rachel Riley |
1970 |
| Episode |
Rhod Gilbert's Growing Pains Rachel Riley, Ahir Shah, Iain Stirling |
2021 |
