Sonisphere Festival announced more acts

Sonisphere Festival 2011 headline Bill Bailey is set to confirmed to perform in this year on July.

On the bill also include Jackass star Steve-O, Andrew O Neill, Bob Slayer, Jarred Christmas, Jason John Whitehead, Jason Rouse and Jim Breuer.

Bailey will headline to perform at the Saturn Arena on the Sunday (July 10) of the rock bash.

Biffy Clyro, Metallica and Slipknot will be line-up to perform at the Knebworth Park on July 8-10.

The Sonisphere Festival line-up so far is:

Airbourne
Alestorm
All Time Low
Anthrax
Arch Enemy
Architects
Biffy Clyro
The Black Dahlia Murder
Black Tide
Diamond Head
Firewind
Four Year Strong
Fozzy
Gallows
Gojira
Grinspoon
House Of Pain
In Flames
InMe
Kids In Glass Houses
Killing Joke
Limp Bizkit
The Mars Volta
Mastodon
Megadeth
Metallica
Motorhead
One Minute Silence
Opeth
Parkway Drive
Periphery
Protest The Hero
Rise To Remain
Sisters Of Mercy
Six Hour Sundown
Slayer
Slipknot
Sum 41
The Treatment
Volbeat
Watain
Weezer
You Me At Six