Just start google-pic searching for keywords like Mod, brit punk, etc and see what comes up. You may find that if you buy from certain labels (like Ben Sherman, Fred Perry, etc) it'll give you the look you want. The streetwear crew around these forums (SF stands for StyleForum) are generally interested in the American workwear look, with a little cheap street-kids look, and a bit of aspirational runway stuff. The Menswear group sort of mixes anything from classic American prep, with a bit of (again, aspirational) Italian styling, with a drop of the traditional British look.