I've got a signed print of this (just the typical comic con deal, but I also got a signed shot gun shell casing! It's by Tony Moore who originally illustrated The Walking Dead comic. This is a section of the image.
Brian Bolland is a award-winning british comic book artist, best known for his work for the comic Batman: The Killing Joke. His meticulous attention for details and composition is what make him one of the best pencilers from England.