Rachel Annabelle Riley is an English television presenter. She co-presents the Channel 4 daytime puzzle show Countdown and its comedy spin-off 8 Out of 10 Cats Does Countdown. She is a mathematics graduate. Her television debut came when she joined Countdown aged 22. With an interest in popularising mathematics and the sciences, she has since co-presented The Gadget Show on Channel 5 and It's Not Rocket Science on ITV. She was also a contestant on the BBC celebrity dance show Strictly Come Dancing in 2013. As an anti-racism campaigner, she was appointed a Member of the Most Excellent Order of the British Empire in the 2023 New Year Honours for services to Holocaust education and antisemitism awareness. Read more
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