Elbow previously hit the top with 'The Take Off And Landing Of Everything' in 2014 and 'Little Fictions' in 2017.
Kiwanuka's new album, titled simply 'KIWANUKA', is set for release on 1 November.
The much-acclaimed album includes the band's UK Top 40 breakthrough hit, 'Do You Remember The First Time?'
The song's lyrics explore themes of responsibility and freedom at this time of climate crisis.
The 2019 ceremony will take place at the Eventim Apollo in Hammersmith, London on 19 September.
The deluxe edition of the band's sophomore album, 'Liquid Skin', is out on 12 July.
The twenty disc box package contains ten studio albums with accompanying bonus discs and two booklets.
The much-anticipated 'Liquid Skin' reissue will be available from 12 July.
The album shot to Number 2 in the UK Album Chart on its initial release in September 1999.
The Brit Award-nominated artist's new album. 'The Book Of Traps And Lessons' is set for release on 14 June.
The new record is available from 18 January via Republic Records.
The special summer show is to mark the 20th anniversary of the band's big-selling second album 'Performance And Cocktails.'
Inspired by Oscar Wilde, ‘Eternity’ is the artist’s personal interpretation of Wilde’s poem ‘The True Knowledge’.
The former Supergrass frontman is currently promoting new album 'World's Strongest Man'.
Lily Allen, Novelist and Everything Everything are also among the artists shortlisted.