British rockers alt-J are on the line-up for Latitude Festival along with Solange Knowles and The Killers.

It will mark the fourth time the indie band have played at the annual music event, which takes place in July in the grounds of Henham Park, Suffolk.

The Mercury Prize winners alt-J said: “We are over the moon to be returning to Latitude for a fourth time. It’s a festival that’s nurtured us beyond any other, taking us from the Lake Stage to the 6music Stage and then to headlining in 2015.

Alt-J Alt-J (Ian West/PA)

“To do so again is a huge privilege. See you in Suffolk!”

Grammy Award-winner Knowles, Beyonce’s younger sister, has previously performed at British festivals including Lovebox and Glastonbury, and her stint at Latitude will be her first time as a headliner in the UK.

It will be the first headline slot at Latitude for The Killers, who have previously been on the top billing at Glastonbury and Reading and Leeds.

Other performers on the line-up include Rag’n’Bone Man, Mogwai, Wolf Alice, The Vaccines, Jessie Ware, The Charlatans, James and Benjamin Clementine.

The festival, which is now in its 13th year, includes non-music acts such as comedian Harry Hill, and Recirquel Contemporary Circus: Paris de Nuit will add a theatrical touch to proceedings.

Latitude Festival takes place July 12 – July 15 at Henham Park, Suffolk.