Band's play Main Stage sets prior to US metal band's headline show
Sheffield band kick up huge circle pits on the Main Stage
Pre-sales allow tickets to be purchased before going on general sale
Band will release new album 'That's The Spirit' on September 11
Metal band will play in Kingston before release of 'That's The Spirit'
LP due for release September 11
Band played their biggest headline gig to date in London last night (December 5)
Band speak to NME about the success of rock music in 2014 and their upcoming Wembley gig
Singer says his band and family 'wanted to kill me'