Britain's Next Top Model series 5

Series 5 of Britain's Next Top Model premiered on Sky Living on 20 April 2009. The series introduced several changes to the show's format. Lisa Snowdon and Huggy Ragnarsson returned as judges, while head garment designer Louis Mariette joined the panel, replacing Gerry DeVeaux. This marked Lisa Snowdon's final season as host, with model Elle Macpherson taking over in series 6 the following year.

This was the first series to include a casting episode, featuring 20 semi-finalists—the largest number of contestants since the show's inception in 2005. Seven were eliminated in the premiere, and the remaining 13 finalists moved into the Top Model house in London.

The series was won by 19-year-old Mecia Simson from Plymouth. Her prizes included a contract with Models 1, a campaign for Max Factor cosmetics, and a cover and six-page editorial in Company Magazine.

Runner-up Sophie Sumner, along with fellow contestants Annaliese Dayes and Ashley Brown, later competed on America's Next Top Model: British Invasion, alongside four other former Britain's Next Top Model contestants. Brown and Dayes were eliminated in episodes 5 and 11, respectively, while Sumner went on to win the competition.