Fans of Countdown are to see a big change to proceedings with Rachel Riley not in her usual role. Instead, a YouTuber has taken over the reins. Dr Tom Crawford, who is known for his channel in ...

Mathematician Dr Tom Crawford will stand in for Rachel Riley on Channel 4’s Countdown while she takes a short break to work on another project, it has been announced. Dr Crawford is well-known ...

Rachel Riley has issued a playful warning to Countdown producers should they ever want her to leave the show. The 39-year-old mathematician is currently on a short break from the programme to ...