Dec 6, 2010 21:19 Biffy Clyro headline Sonisphere 2011 By Tom AylottDecember 6, 2010 by Tom Aylott Biffy Clyro are set to be the second headline act for the UK leg of Sonisphere at Knebworth House on 8th-10th July 2011. Some more recent news articlesCounterparts announce EP, release new single 'Monument'William Ryan Key and This Wild Life announce co-headline tourThe Story So Far release new single
