Sad to see that the 20th Asian Mela won't be on Plumstead Common this year. :(
It's being held at the Army Barracks in Woolwich which gives you a chance to nosey around the site. I've always managed to miss the festival and only know it's on when I drive past so this year, I'm putting it in my diary early.
If you want more information then look at the Asian Mela site.... a little later on this year as many of the pages don't seem active just yet.