Carl Cox, Erick Morillo, John Digweed and Chase & Status will headline the Saturday at this year's SW4 festival.
The bash takes place at Clapham Common in London on August 25 and 26, with Morillo playing his only festival set of the year.
Said Carl Cox: “It’s amazing to be returning to Clapham this year for South West Four. It’s without a doubt a festival with one of the best atmospheres and being where it is means all my friends and family get to join me – another one of the reasons I truly love playing this festival.
“This year, I am back but hosting the main stage – of course a great honour and I’m seriously looking forward to rocking SW4 :)”
The event will close at 10pm for the first time in the festival's nine year history, an extra hour of partying for the event voted DJ Mag's 'Best British Festival'.
The Sunday headliners will be announced shortly.
For details, check out www.southwestfour.com