Limp Bizkit and
Gallows have been added to the line-up for this year's Sonisphere festival in Knebworth.
The event, which runs from July 8-10, will also feature The Sisters Of Mercy's first UK festival appearance in 20 years.
Gojira, INME, Kids In Glass Houses and One Minute Silence have also joined the bill.
Sonisphere will be headlined by Biffy Clyro, Slipknot and the Big Four - Metallica, Slayer, Megadeth and Anthrax.
Other acts on the bill include Motorhead and Mastodon.
Tickets are on sale now.
(by Jason Gregory)