Green Day announce Reading and Leeds warm-up show
The US rockers will play a date in London in the run-up to headlining the festivals
The US rockers will play London's O2 Academy Brixton on Wednesday August 21.
Organisers have announced that tickets for the show go on general sale at 9am (GMT) on Wednesday August 14.
In August last year Billie Joe Armstrong and co played an intimate gig at London's Shepherds Bush Empire, before playing a 'surprise' set at Reading and Leeds on the NME/Radio 1 Stage.
They'll headline the main stage at this year's event alongside Biffy Clyro and Eminem.
Others bands on this year's bill include Nine Inch Nails, Foals and Chase & Status.