Band appear on summer schedule alongside Jungle, The Courteeners and Clean Bandit
Barat says his band could use Gallagher's 'clarity of vision'
Singer spoke about writing third Libertines album with Pete Doherty
Band to play July 9 show at the 3Arena
Band are expected to release new album later this year, their first release in 11 years
Band are first headliners to be announced for Scottish festival
Barât said he will 'work on depression' so he can be happy
Doherty and Barat currently working on Libertines' third album in Thailand
Band are scheduled to release their new album later this year
Doherty says band's new album is chance to record old material properly