Chase And Status are set to perform live at this year's Relentless Boardmasters festival.
The drum and bass and dubstep duo will be joined by rapper Example and emerging act French Horn Rebellion in supporting Leftfield at the event.
Seasick Steve and Newton Faulkner are also set to top the bill with more names expected to be announced in the coming weeks.
Tickets will go on general sale on 12 March priced at £35 for a day pass, £60 for a weekend ticket without camping and £80 for a weekend pass with camping.
Relentless Boardmasters 2010 takes place in Newquay, Cronwall on Fistral Beach and Watergate Bay from 4-8 August.
As well as three stages of live music, the festival also hosts a number of action sports events, including skating, surfing and BMX south-west-four-sw4-2009.