Add Yahoo as a preferred source to see more of our stories on Google. Rachel Riley stars as the maths guru on 'Countdown'. (Channel 4) Rachel Riley has told how she was once groped by a Countdown fan ...

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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 ...