Ed Sheeran auditioned and Gary Barlow wrote the songs: Why wasn’t Britannia High a hit?

With an all-star team including Gary Barlow and Arlene Phillips at the helm, ITV’s ‘Britannia High’ was meant to be ‘Skins’ with jazz hands, writes Isobel Lewis. Fifteen years on, the cast look back on what could have been, and how ‘intense’ auditions, drastic script changes and cast swaps pushed the show from a modern-day take on ‘Fame’ to a swiftly cancelled tween drama