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 an English television presenter, and is best known for co-hosting Channel 4's daytime puzzle show, Countdown. The maths graduate also features on the show's popular comedy spin-off, 8 ...

Rachel Riley is a TV presenter and mathematician. The celebrity is famous for being a co-presenter on Countdown on Channel 4 and The Gadget Show on Channel 5. Rachel Riley also to ...

Rachel Riley’s Countdown replacement has been confirmed as the presenter steps away from the daytime game show for three weeks. The 39-year-old mathematician joined the Channel 4 show in 2009 as a ...

Countdown host Rachel Riley apologised for a controversial now-deleted tweet linking a violent attack in a Sydney shopping mall to pro-Palestinian protests in response to the Israel-Hamas war. Riley, ...