What: British reggae and dancehall label Necessary Mayhem celebrates six years in the business
Where: Big Chill House, 257 Pentonville Road, London N1 9NL
When: Saturday 25 August (9pm-4am)
Why: Top DJs Robbo Ranks, Silverstar, Curtis Lynch, Marcus Visionary, Joe Grime, Why Delila and The Large, and pas from Tippa Irie, Serocee and Mr Williamz.
Web: Big Chill House