Biffy Clyro to headline Sonisphere Festival 2011 – ticket details

Scottish rockers join Slipknot at top of festival's bill

Biffy Clyro have been confirmed to play a headline slot at next year’s Sonisphere Festival at Knebworth Park.

The Scottish rockers will headline the Saturday night (July 9) of the festival, which takes place over the weekend of July 8-10 next summer. They join Slipknot, who are already confirmed to top the bill on another day.

Biffy Clyro wrapped up their UK arena tour on Saturday (December 4), and are currently touring Australia. Sonisphere is their only confirmed UK festival appearance for 2011 so far.

See the festival’s official website,, for more information.

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