Pendulum will play this year's Sonisphere as special guests of headliners Iron Maiden as organisers reveal a slew of new acts.
Alice In Chains will return to the festival again after impressing so much in 2009, while Therapy? will make the festival their only UK show of the year when they play ‘Troublegum’ in its entirety.
Elsewhere Terrorvision have been added to the bill along with Dir En Grey, Lacuna Coil and Municipal Waste who have all been secured on exclusives.
Europe, Sick Of It All, Evile, Renegades and Rise To Remain will also play over the weekend joining Rammstein, Motley Crue and Slayer.
Click here for the latest Sonisphere line-up.
Tickets for the festival are onsale now priced at £132.50.
Sonisphere 2010 will take place at Knebworth House, expanding to three days, from 30 July to 1 August.