Ché Walker wrote The Frontline while he was sitting backstage during last year's Othello at Shakespeare's Globe. As an actor in a minor role, Ché was lucky enough to have a two-and-a-half hour break each evening. So he sat in the Globe's attic in his doublet and hose with the Moor of Venice's Shakespearean rhythms floating through the floorboards while he penned a piece about Camden's lowlife. It's an incongruous image. But surely incongruity......