COUNTDOWN'S Rachel Riley went to war with co-star Susie Dent today after the lexicographer slammed her numbers round. In a comical clip posted on Instagram, the 31-year-old engaged in a lightsaber ...

Rachel Riley has been temporarily replaced on Countdown by a tattooed YouTube mathematician who teaches equations in his underwear. Dr Tom Crawford, known for his Tom Rocks Maths channel on the ...

Rachel Riley is taking a short break from Countdown to work on another project (Picture: Channel 4) Rachel Riley is taking a temporary step back from her Countdown duties, and now her replacement has ...

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 for his ...

Rachel Riley is set to be temporarily replaced on Countdown by mathematician Dr Tom Crawford, as she takes a brief hiatus from the Channel 4 show to focus on another project. Dr Crawford, who is a ...

Rachel Riley will be temporarily replaced on Countdown by mathematician Dr Tom Crawford. The maths expert will take a short break from the Channel 4 programme to work on a different project. Dr ...

Rachel Riley is set to be temporarily replaced on Countdown by mathematician Dr Tom Crawford. The maths whizz will take a brief hiatus from the Channel 4 show to focus on another project. Dr Crawford, ...

Channel 4 has confirmed Rachel Riley will be replaced on Countdown while she takes a break, but who is the new host? Riley first took over presenting duties in 2009 from Carol Vorderman, who appeared ...

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 for his ...