Just announced as the secret headliner, Coxy said: "I will be playing, of course, the very best in old school house and taking it way back to the days. Don't miss it, it's going to be awesome, OH YES!"
51st State, taking place at Trent Park in Cockfosters, also welcomes Masters At Work, Dimitri From Paris, Derrick May, Dawn Penn and loads more across six areas. These are hosted by Groove Odyssey, Found, BackTo95, We Love Soul, Hotwuk and Studio 51.
A few weeks after 51st State, Coxy plays a castle rave in County Westmeath, Ireland.
See the full 51st State line-up below.
Dave Turner is Mixmag's Digital News Editor, follow him on Twitter