The comic, 41, said he was deeply “shocked” by the April 2010 incident in which his friend claims to have suffered a broken leg.
Noel Gallagher, Nicole Scherzinger, Emeli SandÃ©, Paloma Faith, Kasabian, Jessie J, Rizzle Kicks and Jake Bugg are among the singers confirmed for the show.
Comedians including Jimmy Carr, Noel Fielding, Frankie Boyle and Simon Amstell are also scheduled to make appearances.'Give it Up for Comic Relief' will air at 10pm on BBC Three.
The court heard that officers found traces of cocaine on Mr Browne, who had been asked to clear away drugs paraphernalia from the party, but no further action was taken.
Fielding, 41, was handcuffed and strip-searched but no drugs were found.
But Fielding says that to suggest you can only enjoy his television and live shows along with a mega dose of drugs and alcohol is a total “cop out”.