“London is enjoying a rash of exhibitions by artists who draw their inspiration from popular street culture, and salerooms are planning to increase the exposure they get in major auctions. Described variously as street, urban or graffiti artists, few have had a traditional fine-art education and most have their roots in graphic design or are simply self-taught… But the artists and galleries that represent them are cocking a snook at the establishment because they have caught the imagination of the public, collectors and investors alike.”