Nine Inch Nails are among the latest names announced for this year's Sonisphere Festival.
The industrial rockers are set for the new Knebworth event along with trash metallers Anthrax, Killing Joke and Aussie rockers Airbourne.
Speaking about Anthrax’s appearance, guitarist Scott Ian said: "We are really excited to be making our only UK appearance at Sonisphere. We've been anticipating our return to the UK and we are honoured to be a part of this amazing line-up.
It's also going to be Dan Nelson's first UK gig and what better way to show him off than on this show?! Leave it to Metallica to create what I will wager is going to be THE festival of the year. See you at Sonisphere and get ready for a full-on Anthrax attack!!!"
Today’s confirmations join headliners Metallica and Linkin Park as well as Bullet For My Valentine, Machine Head and more.
Click here for the latest Sonisphere line-up.
Sonisphere 2009 will take place at Knebworth House from 1-2 August.
Weekend camping tickets are on sale now priced at £157.50 (plus booking fee).
Other options available include a two-day pass without camping (£132.50), family camping tickets and coach options too.
Click here to buy Sonisphere tickets.