Last saturday I went to the L+F London vintage fair in Putney. The fair was smaller than I had expected but they had some nice pieces there and everything was affordable and very well priced. Unfortunately I forgot to bring my camera so didn't actually get any photos!
L+F London sources vintage + second hand clothes/ accessories. Each piece has a contemporary feel (so you'll never look like you're wearing fancy dress) while remaining one-of-a-kind. Affordable clothes without the trawl through rails of musty tat.