Rachel Annabelle Riley, born 11 January 1986, is a television presenter.
Since 12 January 2009 she has been the co-host of Countdown. She replaced Carol Vorderman from the 60th series onwards.
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 A’s at A-Level.
In 2009 Rachel Riley was ranked #95 in FHM’s 100 Sexiest Women poll.