Justin Bieber looks set to leapfrog back past Sigala to Number One single with 'What Do You Mean?'
Frontman Oli Sykes says his band are the underdogs in race for UK Album Number One
Band release new album on Friday, September 11
Singer describes ketamine as a 'scummy drug' that 'took my ego away'
Tickets will be allocated through a ballot system
'If we got offered that slot we'd make sure it was one to remember,' says frontman Oli Sykes
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