...Countdown: Jimmy Carr hosts as Jon Richardson and Rosie Jones take on Joe Wilkinson and Phil Wang. John Cooper Clarke is in Dictionary Corner. With Rachel Riley ...

All the latest news stories, photos and videos on TV star, Rachel Riley. The celebrity mathematician is best known for her appearances in Countdown and 8 Out of 10 Cats Does Countdown, but ...

Holly Walsh and Jon Richardson take on Sean Lock and Bob Mortimer, Claudia Winkleman stands in for Rachel Riley, and Isy Suttie joins Susie Dent in Dictionary Corner.