In addition to running an exhibition programme Pictures on Walls sell signed and numbered editions and products by a whole host of street artists and like-minded individuals including Bast, Banksy, Cyclops, EVOL, Invader, Sweet Toof, Modern Toss, David Shrigley and others. They also offer a Banksy authentification service where you can upload images and documentation of any Banksys in your possession. if successful, on payment of a fee, you'll receive a certificate of authenticity.
