SONISPHERE Festival bosses have revealed the next nine acts for their 2011 line up.

Nu-metal icons Limp Bizkit are set to hit the stage before festival closers Slipknot while 80s Goth rockers Sisters of Mercy have confirmed they will be making their first UK festival appearance in more than 20 years.

The Knebworth based festival takes place on July 8-10. www.sonispherefestivals.com