Dizzee Rascal is to headline the Lovebox Weekender next year.
The festival, which takes place in London's Victoria Park on July 16th, 17th and 18th next year, will also host Chase and Status on the opening Friday.
Dizzee, who spent his youth in nearby Bow, said: "I'm really looking forward to headlining such a wicked event in the area where I grew up."
Further acts performing at the festival - the first time it has been spread over three days - will be announced in the coming months
Meanwhile, Seattle band Pearl Jam have also been announced as the headliners to the Hard Rock Calling festival in London's Hyde Park.
Hamish Dodds, president of Hard Rock International, said: "For nearly two decades, not only has Pearl Jam been one of the world's top bands, but they have also actively shown their support for several philanthropic causes."
Pearl Jam will headline the event on June 25, with the headliners for the following two days yet to be announced.