
The three-day festival takes place at De Montfort Hall and Gardens, Leicester, over the weekend of 8-10 August.
Other new additions include Royworld, Benga, Zombie Zombie, The Lionheart Brothers and Frightened Rabbit.
They join headliners The Coral (playing an acoustic set) and Supergrass, plus Simian Mobile Disco, Roisin Murphy, Whitest Boy Alive, King Creosote, Of Montreal, Rachel Unthank, Lightspeed Champion, Jeffrey Lewis, Tom Baxter, Nina Nastasia and Dengue Fever.
'Early bird' tickets are on sale now priced £90 for adult weekend camping, with various family tailored deals also on offer.
Phone De Montfort Hall on 0116 2333111 for more details or click HERE to browse and book your ticket. Note, Summer Sundae is operating a ticketless scheme via TixMob where your ticket will be sent to your mobile.