The energy in the O2 Arena was electric as @Usher performed an incredible 10-act show, revisiting his greatest hits and newest tracks at the first of 10 sold out nights in London's O2 arena 🔥 📸: Gareth Cattermole #usher #pastpresentfuture #o2arena #theo2london #london #lngcn t.co/l38wS2i4vm