the dubstep is on the saturday (with the exception of skream n benga on the friday)
Dubstep Terrace
Rusko (Live)
Caspa
Mary Anne Hobbs
Hatcha & N Type
Toddla T
Darkfire Dub
Friday line up - http://www.globalgathering.co.uk/2009/line-up/friday
Saturday line up - http://www.globalgathering.co.uk/2009/line-up/saturday
tickets arnt cheap tho so wouldnt recomend purchasing if you're not into anything else on the line up