This week we are hitting the streets to discover work by some of the best international urban artists currently transforming our city into an outdoor gallery. But where to start looking? We track down the colourful contributions of artists including Malarky, Invader, Stik, Conor Harrington, Banksy, Roa, Phlegm, Burning Candy Crew, Ben Slow and Pablo Delgado and chat to Richard Howard-Griffin, CEO of Street Art London about why our city has become an internationally renowned street art hub. We even got Paintshop Studio to create our very own mag cover which you can watch above or by downloading the Aurasma app and pointing your smartphone at the cover. Magic.