News is that a new festival called Eastival comes to east London in Spring 2012. I know very little about this so between us we must find out more. Keep LSF updated as it sounds like there could be street food involved. The website is eastival.co.uk but they update from @eastival. LSF
London Street Foodie is an ever-growing guide to the best places to eat London street food. There's a lot of street food waiting to be discovered right now; we'd like to help nudge you towards the good stuff.