Rachel Riley

Rachel Riley
Numbers queen and television presenter Rachel Riley, 27, is best known for co-presenting Countdown and The Gadget Show.

The Oxford graduate was an unknown star when she joined Countdown in January 2009, becoming the face and brains behind the letters and mathematics solutions on the show.

Chosen from more than a thousand applicants, despite having no television experience, Rachel has since filmed over 1000 episodes of the show.

In June 2013, Rachel became a presenter on the Channel 5 programme The Gadget Show, co-hosting alongside Jason Bradbury.

Susie Dent amuses Rachel Riley and Countdown fans with her latest Word of the Day. Countdown filth spills over on to Twitter "Let's speed this along," the embarrassed Countdown presenter tells Nick Hewer. Rachel Riley spells out 'slutz' on Countdown Father Jack Hackett would be very proud of Myleene's choice of word. Myleene brings 'gobs**te' to Countdown And yes, Joey Essex will return - but this time he's helping Rachel Riley. 8 Out of 10 Cats Does Countdown for May Nick Hewer handles Countdown's latest erection very professionally. Countdown gets another 'erection' Claudia Winkleman, Adam Garcia and Jo Whiley were all in attendance. Comic Relief's Danceathon completed DJs Gemma Cairney, Edith Bowman and Sara Cox are among the other stars taking part. Davina McCall for Comic Relief Danceathon A group of normal school children get trained in how to have a super memory. Memory Slam: These kids are amazing The former Xtra Factor presenter is currently dating Jack Street. Flack: 'Strictly can improve relationships' The Channel 4 mash-up show will return for Christmas episode and full series. 8 Out of 10 Cats Does Countdown for new series Danny Davies wins a legion of fans after channelling Moss on the teatime quiz. Man wears IT Crowd T-shirt on Countdown Guest Dave Myers leaves everyone red-faced with his his seven-letter suggestion. Rachel Riley tickled by todgers on Countdown "I've got an 8," takes on a new-meaning. Unexpected erection gets titters on Countdown Strictly stars show their support for Julien Macdonald at the Royal Opera House. See Rachel Riley and Pasha Kovalev at LFW The Channel 4 series airs its landmark episode today (September 5). Countdown enters Guinness World Record books Marvin Humes, Warwick Davis and Rachel Riley are among the stars taking part. You can control celebs in new Channel 4 show The traditional printed dictionary is being replaced with an online version. Dictionary Corner going digital The Countdown star received 500 messages from one individual over eight months. Rachel Riley speaks out about stalker Riley also spoke about her appearance in 24 Hours to go Broke. Rachel Riley: Nick Hewer should slow down The Strictly Come Dancing star shows off a different kind of footwork on TV. Rachel Riley reveals ball skills - photo Jimmy Carr will return to host the mash-up when it comes back in June. 8 Out of 10 Cats Does Countdown to return Amy Williams signs up to join the Channel 5 team in the autumn. Rachel Riley leaves The Gadget Show Countdown star says friends "laughed their heads off" at reports she would join BBC Breakfast. Rachel Riley not replacing Susanna Reid Star makes her second appearance on the Channel 4 show's Dictionary Corner. Popstar posts selfie from Countdown Chris Hoy, Alexandra Burke and more will take part in show's final episodes. Millionaire reveals final celeb lineups The cheeky anagram combination was revealed to spell 'mythicise'. Countdown letters spell 'itchy semi' Channel 4 commissions a 17th series of the comedy panel show. 8 Out of 10 Cats renewed for new series Jason Bradbury and Rachel Riley set the world record on upcoming episode. Gadget Show breaks Pac-Man world record Strictly star is said to have told friends that she has split from Jamie Gilbert. Rachel Riley 'splits from husband' Where do you stand on the debate surrounding the Hairy Biker's dodgy dancing? Dave Myers on Strictly: Hero or joke? The Countdown star loses out in the latest dance-off in the BBC show. 'Strictly': Rachel Riley voted out DS catches up with the Countdown host ahead of this weekend's Halloween special. Strictly: A Quickie With Rachel Riley The Countdown star says that she isn't ready to leave the competition. Rachel Riley: I've got the Strictly bug The fashion designer faced Countdown's Rachel Riley in the bottom two. 'Strictly': Julien Macdonald exits Helen Warner states that Lorraine Kelly's job is safe on the breakfast show. Rachel Riley 'Daybreak' rumour denied Catch up with all this week's dances, judges' scores and comments. 'Strictly' week 2: All the best pictures Who was the best celeb to take to the dancefloor after Strictly's second live show? Strictly week one: Who's your favourite? See stunning pictures of the celebrities taking part in Strictly's second show. 'Strictly Come Dancing' show two pictures Eight more celebrities get their fake tan on and hit the BBC dancefloor. Strictly Saturday show: as it happened The Countdown star misses her appearance after her alarm clock fails. Riley sleeps through BBC Breakfast slot