Gary Numan is the latest star name to join the line-up for the three-day rock fest at Knebworth in July and he will be joined by Band Of Skulls, New Model Army, Gallows, Carcass, The Winery Dogs, The Bronx and Sebastian Bach.
Chiodos, 65daysofstatic, Bam Margera, Little Matador, The Lounge Kittens and Anti-Nowhere League will also be playing the event.
Little Matador singer Nathan Connolly said: "Knebworth is such an iconic place and to be part of the 40 years of rock history will be an honour. We promise to crank it up as loud as we can."
Iron Maiden, Metallica and The Prodigy headline Sonisphere 2014 alongside Limp Bizkit, Deftones, Alice In Chains and many more.
You can get the full line-up and ticketing details at sonisphere.co.uk