Jazzie B, Steam Down, Barney Artist and Omar also joining.
100% of profits will be donated to a different charity each month.
Matthew Herbert, Sons of Kemet, Objekt and Call Super also billed.
DJ Sundae, Cherrie Flava, Gina Lollobrigida and Born Cheating also joining.
Dam-Funk, Jayda G, Awesome Tapes From Africa and Steam Down Orchestra also booked.
Hunee, Joe Armon-Jones and Derrick May also joining.
Both festivals have shared the site together for over ten years.
A four-day Worldwide Family Gathering in Cambridgeshire.
Free entry every Thursday with a uninitiated b2b pairing.
Hunee, Move D, Craig Richards and Peach also incoming.