Plan B and Leona Lewis are the first artists that have been announced to play BBC Radio 1's Hackney Weekend event: a huge outdoor festival set to take place next summer to celebrate the 2012 Olympic Games.
The event will take place on London's Hackney Marshes on June 23–24 and will hold up to 100,000 people. Leona Lewis and Plan B are the only artists to be confirmed so far, but they are set to be joined by 80 more, with the acts playing across six stages.
The majority of the tickets, which will all be free, will be given to residents of Hackney and the surrounding London boroughs.
BBC Radio 1's Hackney Weekend will act as the station's annual One Big Weekend festival. This year's event was held in Carlisle last weekend.
Plan B and Leona Lewis are also confirmed to act as ambassadors for the Hackney event, alongside BBC Radio 1's Trevor Nelson and Olympic triple jumper Phillips Idowu.