Enter Shikari, Lostprophets and Example have been confirmed for this summer's Hackney Weekend event in London.
Santigold, B.o.B, Ben Howard and Delilah will also perform at the event
Other additions to the festival line-up include Jay-Z, Chase & Status, David Guetta, Dappy, Will.i.am, Labrinth, Jack White, Emeli Sande and Lana Del Rey.
Artists previously announced include Leona Lewis, Plan B, Florence & The Machine, and Tinie Tempah.
The event, organised by BBC Radio 1, will take place on the weekend of June 23-24 at Hackney Marshes in London.
The BBC have revealed that 100,000 people would be able to attend the event, which will feature six stages - including the BBC Radio 1 Main Stage and an In New Music We Trust arena.
The show will be broadcast live on Radio 1, Radio 1Xtra and BBC Three, as well as online.
Like Radio 1's other Big Weekend festivals, the majority of tickets will go to people living in Hackney and the surrounding boroughs. To register visit here.
Enter Shikari - live