Poster Cabaret
I found this cool site, Poster Cabaret. They have tons of cool gig posters.
This is what they say about themselves:
Poster Cabaret focuses on only the best modern gig posters. The web gallery is organized by artist. You can also search the site for a band by using the "band search" function. The website features poster art from the best artists making modern concert posters. 
Category Article Birmingham graphic design, Birmingham graphic designer, Birmingham illustrator, posters
