Rachel Riley: From Numbers Expert to National Treasure
17 January 2026A Career Built on Mathematics and Media Rachel Annabelle Riley MBE is an English television presenter who co-presents the Channel 4 daytime puzzle show Countdown and its comedy spin-off 8 Out of 10 Cats Does Countdown. Riley’s television debut came when she joined Countdown aged 22, replacing the iconic Carol Vorderman in 2009. Since then, […]