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 ...

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Rachel first joined Countdown in 2009, taking over from Carol Vorderman RACHEL Riley has been temporarily replaced on Countdown – by a YouTube star. The Channel 4 words and numbers show will undergo ...

Rachel Riley appears to have taken aim at Countdown co-host Anne Robinson following the latter's announcement that they will be departing the game show later this year. Riley shared an Instagram post ...

Rachel Riley has told how she was once groped by a Countdown fan in front of his wife, before the couple were banned from the show. Maths whizz Riley, 35, spoke about the unpleasant moment filming the ...