More acts have been revealed for this year’s Sonisphere Festival.

Heavy rock acts such as Wilko Johnson, Electric Wizard and Dog Eat Dog Playing All Boro Kings will play the show in the grounds of Knebworth House between July 4-6.

Joining them will be Anti-Flag, Black Spiders, Brutality Will Prevail, Emp!re, Krokodil, Ragin Speedhorn, Reckless Love, Stampin’ Ground, Tesseract, The Defied, The Hell, The Hype Theory and The Safety Fire.

Headliners The Prodigy, Iron Maiden and Metallica have already been confirmed.

The event will also be a celebration of 40 years of Knebworth House’s role as a popular music venue.

Visit www.sonispherefestivals.com for more information.