Other acts now confirmed for the bash at Robin Hill Country Park, Isle of Wight are The Sugarhill Gang, Underworld, Hot Chip, Paul Heaton, Chromeo, Santogold, The Coral, Hadouken!, The Black Kids and Stereo MCs.
DJs including Carl Craig, Laurent Garnier, Zane Lowe, Alexa Chung and Coldcut have also been added to the bill.
It was announced last month that My Bloody Valentine, Aphex Twin and CSS would also be playing the summer bash.
Speaking about the new acts, organiser Rob da Bank told eFestivals: "It's such a nail biting experience unleashing our lineup to the faithful Besti family but I can honestly say this year's lineup is my favourite so far."
The festival takes place on September 5-7. Tickets are on sale now.