My friend Harry at school has recently taken the plunge in setting up his own mini business called Venator Clothing, making and selling tie dye t-shirts. They only cost around a tenner, much less than something from Topshop or ASOS and are really good quality and so unique (I refuse to call them indie). They come in all different patterns which all look really cool and they're so affordable so they're perfect! It'd mean a lot to him I'm sure if you could check out his shop and like his facebook page (which I think is easier to buy from if you're interested).
Venator Clothing's links
Are there any little stores which you like at the moment?