They join the likes of previously announced acts Leonard Cohen, The Buzzcocks and The Mighty Boosh.
The festival is set to take place on August 1-3 at Eastnor Castle Deer Park in the Malvern Hills.
The line-up so far is:
Hot Chip (DJ set)
Vincent Vincent And The Villains
Bomb The Bass
The Thievery Corporation
Rachel Unthank And The Winterset
New Orleans Hot 8 Brass Band
Asian Dub Foundation Sound System