I enjoy Britannia High because A, Lauren Waters (played by Georgina Hagen) is one of my favourite characters from the show as she is awesome, B, The episode plots are well thought out as well as the songs in the episodes (Wake Up being one of my favourite songs) and C, the rest of the cast are amazing (BB and Jez being two more of my favourite characters).
I really wish they had continued with the show by making another series or two of it, despite it getting low ratings. Then we could have seen the characters being fleshed out even more, e.g. Lauren becoming more confident than she was in the old episodes.