An Oxford and Cambridge university lecturer and YouTuber has made his debut on TV quiz Countdown. Dr Tom Crawford, who has more than 200,000 subscribers on his YouTube channel Tom Rocks Maths ...

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.

An Oxford and Cambridge university lecturer and YouTuber has made his debut on TV quiz Countdown. Dr Tom Crawford, who has more than 200,000 subscribers on his YouTube channel Tom Rocks Maths, is the ...