It aired on ITV and TV3 Ireland, premiering on 26 October 2008.
The show starred Sapphire Elia, Georgina Hagen, Mitch Hewer, Rana Roy, Matthew James Thomas and Marcquelle Ward, as well as Adam Garcia as the dance mentor, Lorraine Pilkington as the music mentor and Mark Benton as the school principal and acting mentor.
He starts the year as Lauren's boyfriend, but they break up in episode 6 when he starts dating Claudine.
In episode 8, he admits he has feelings for both girls and they force him to choose.
Pixie Lott also auditioned, as did Ed Sheeran and Danielle Peazer.
The show featured an original soundtrack which was created by a team of pop producers and writers in the UK, led by Take That member Gary Barlow.
The show has been compared to the popular musicals High School Musical and Fame.
Britannia High was commissioned by ITV from ITV plc's in-house production division.
After low ratings, ITV did not commission a second series.