Ed Harcourt also helps out on 'You're My Waterloo'
Band filled headline set with old material and tracks from new album 'Anthems For Doomed Youth'
Pete Doherty and Carl Barât step up to headliner status following last appearance at festival in 2010
Band speak in new interview ahead of 'Anthems For Doomed Youth' album release
Libertines frontman reveals distate for journalists and tabloid media in new interview
Singer also reveals he's still worried about bandmate Pete Doherty's addiction troubles
Band's third album will be released on September 11
The band will announce new events preceding 'Anthems For Doomed Youth' shortly
Third album 'Anthems For Doomed Youth' will be released in September
Somewhere Over The Railings events set for Kings Heath, Bristol, Chatham, Exeter, Glasgow, Manchester and Stoke