OK, this is what
wiki had to say about brown sugar. Molasses can be added, or it can be retained in the less refined sugar (which is the way we get it here) rather than it being added to white sugar which is obviously what you're talking about.
Anyway, that was interesting. I don't know if the type of brown sugar you're likely to get over there is the same as what we have here. It's more like castor sugar and is quite dark. You can get light brown sugar here too, but I prefer the dark for cooking with. It's what I use if I want to do a flambe with fruit. Chopped up fruit, brown sugar and butter onto a hot pan all at once and cook quickly till the sugar is disolved and the pan starts to smoke slightly.