Biffy Clyro has self-confirmed themselves for Glastonbury Festival 2011 when the event returns to Worthy Farm, Pilton in Somerset from 22-26 June.
Last year the group appeared on the Park Stage as secret guests.
Speaking to bestnewbands.com, the band said: “We are playing Bamboozle actually, in America which is pretty exciting to get to play that festivals as there are a lot of really cool bands, and obviously we’re holding out for offers from other American festivals.
“But over in Britain we’re playing Sonisphere which is really cool, and we’re doing Glastonbury and a couple of cool European festivals too.”
U2, Coldplay and Beyonce will headline the event with the full line-up announcement expected in the Spring.