Rachel Annabelle Riley (born 11 January 1986 in Rochford, Essex) is an English television presenter. Since 12 January 2009 she has been the co-host of Countdown. She replaced Carol Vorderman on 12 January 2009. Nick Hewer is the chief presenter and Riley does the letters and numbers. Riley was educated at Southend High School for Girls and went on to study mathematics at Oriel College, Oxford, gaining an upper second-class honours degree, having obtained four grade As at A-Level. After graduating, Riley began work as a data analyst for a website company in London. She was encouraged to apply for the Countdown position by her mother, a charity fundraiser married to a City auditor, and also by her boyfriend's mother. She did not have an ambition to be a television presenter, but decided to apply because she was interested in the numbers part of the game. Riley was chosen from more than a thousand applicants despite having no television experience.
Contributions by Paul MacDermott, SolomanMcKenzie, and Felix Folio Secundus.