Big Brother 9 was the ninth series of Big Brother which aired on Channel 4 and E4. The series was launched on 5 June 2008, and ran for 13 weeks until 5 September 2008. The winner of the series was Rachel Rice, who beat bookies' favourite Michael Hughes in the final vote with 51.3%. At the time of the series, Big Brother 9 was the least watched summer series in Big Brother's history, until the following series, with an average of only 3.6 million.