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 is a well-known English TV presenter, most notably co-hosting Channel 4's popular daytime puzzle show, Countdown, and its comedy spin-off, 8 Out of 10 Cats Does Countdown. Born in ...

Countdown star Rachel Riley has said she’d rather swim with great white sharks than be a contestant on Strictly Come Dancing for a second time. The 39-year-old TV star took part in the BBC dance ...

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 ...