Grab a huge, grimey piece of Carnival action over in King's Cross tonight as Urban Nerds take over Scala for a three-room mix. In room one, there's dubstep, house, funky and bass from Breakage & MC Wrec, Mala and Coki (aka Digital Mystikz), Kode9, Jackmaster, Marcus Nasty and more. In room two, meanwhile, bashment kings The Heatwave are joined by jungle MCs Ragga Twins, Ungle Dugs, grime instrumentalists Terror Danjah and Champion and friends. Meanwhile, up in room three, it's on a garage tip with old schooler Sunship, Alruii, White Tyson and more from Merk Chicken. Can you spell big?