U2tour.de have captured crew preparing for U2’s ‘secret’ concert, while fans are waiting in front of the building. The band are going to play from the roof of the BBC’s Broadcasting House, at the top end of Regent Street on the corner of Langham Place.

Tune in to Radio 1 online for a live report from 7.15pm GMT.

Note the P.A. one step down from the rooftop, captured by liamam: