Background and career
Rachel Annabelle Riley (born 11 January 1986) is an English television presenter. A mathematics graduate of Oriel College, Oxford, she joined the Channel 4 game show Countdown in January 2009 and also co-presents its comedy spin-off, 8 Out of 10 Cats Does Countdown. Riley has co-presented The Gadget Show (2013–2014), It's Not Rocket Science (2016), and football programmes for Sky Sports. She competed in the eleventh series of Strictly Come Dancing in 2013. Her work promoting mathematics includes school visits and the book At Sixes and Sevens: How to Understand Numbers and Make Maths Easy (2021). Riley is an anti-racism campaigner whose work includes Holocaust education and raising awareness of antisemitism. She was appointed a Member of the Order of the British Empire (MBE) in the 2023 New Year Honours for services to Holocaust education and antisemitism awareness. In 2025, she received the Freedom of the City of London for her work in these fields.
Riley was born in Rochford, Essex, and grew up in Thorpe Bay, Southend-on-Sea. Her mother is Jewish, and Riley has described her maternal family's migration from Tsarist Russia during the pogroms. She attended Thorpe Hall School and Southend High School for Girls. She achieved three A grades at A-level and an AS-level before studying mathematics at Oriel College, Oxford, where she graduated with a second-class degree. While at university, Riley completed an internship at Deutsche Bank in the City of London. She subsequently decided against pursuing a career in finance.
Riley joined Countdown in January 2009, succeeding Carol Vorderman. Her appointment was announced alongside that of Jeff Stelling, who replaced Des O'Connor as the programme's main presenter. Riley's role involves displaying the letter and number selections and providing solutions to the numbers rounds. Encouraged by her mother, Riley applied because of her interest in the programme's numbers rounds. She was selected from approximately 1,000 applicants despite having no previous television presenting experience. From 2012, Riley also appeared in the same role on 8 Out of 10 Cats Does Countdown, the comedy spin-off hosted by Jimmy Carr.
From 2013 to 2014, Riley co-presented The Gadget Show on Channel 5 with Jason Bradbury. She appeared in three series before being succeeded by Amy Williams. In 2016, she co-presented the six-part ITV science entertainment series It's Not Rocket Science with Ben Miller and Romesh Ranganathan. Later that year, Riley joined Sky Sports, presenting Friday Night Football with Stelling and Fantasy Football Club with Max Rushden and Paul Merson. She left Friday Night Football in 2017.
In 2013, Riley competed in the eleventh series of Strictly Come Dancing, partnered with professional dancer Pasha Kovalev. They were eliminated in the sixth week following a dance-off against Abbey Clancy and Aljaž Škorjanec. Riley later described experiencing stage fright during the series and receiving cognitive behavioural therapy to help manage it.
Riley has visited schools to encourage interest in mathematics and science. She has also supported National Numeracy initiatives and encouraged girls to pursue science, technology, engineering and mathematics. In October 2021, she published At Sixes and Sevens: How to Understand Numbers and Make Maths Easy. Riley is a global ambassador and UK board member of Grassroot Soccer, a charity that uses football in adolescent health programmes. In 2019, her promotion of Shell's energy initiatives drew criticism from environmental campaigners, who described the campaign as greenwashing.
Sources
Net-worth figure: Celebrity Net Worth (October 2026), in USD. Biography and career facts: the person's Wikipedia article and linked reporting. Snapshot date for all StarWorth figures: 28 October 2026.
