Rachel Riley has been temporarily replaced on Countdown by a tattooed YouTube mathematician who teaches equations in his underwear. Dr Tom Crawford, known for his Tom Rocks Maths channel on the ...

Rachel Riley has issued a playful warning to Countdown producers should they ever want her to leave the show. The 39-year-old mathematician is currently on a short break from the programme to focus on ...

TV star Rachel Riley has lifted the lid on what one of her famous co-star's is like behind the camera. The maths whizz has made a name for herself on Countdown and its comedy spin-off 8 Out of 10 Cats ...

Countdown's Rachel Riley will be temporarily replaced by YouTube math star, Dr Tom Crawford. It was announced that Riley, Countdown's very own mathematician, will have to step down from her hosting ...