The station, which re-branded from Virgin Radio in September last year, is teaming up with the Regent Street Festival to host the gig, which takes place on Sunday September 27.

Absolute Radio DJs Christian O'Connell and Geoff Lloyd will be hosting a "rock 'n' roll birthday bash", including the Madness gig, with more artists to be announced shortly. This will be the first time the street has been closed for a gig.

Tickets for the gig will be given away ...