British Summer Time: Justin Bieber

Biebs' renaissance in the last few years has opened up his fans beyond the tween market meaning this won't simply be a tween scream-fest but a waltz through JB's recent monster hits. However, the blonde bombshell does have a rollercoaster ride with fame so here's hoping he's on good form. Support comes from Martin Garrix, Tove Lo, Anne-Marie.