This chapter makes a case for the importance of the 1830s in the history of the British novel. Although unmarked by the publication of novels that enjoyed the longevity of fiction published in the decades before and after, this decade produced a conjunction that was to have a major impact on the future development of the novel form: the emergence, on the one hand, of the young Charles Dickens as a talented new writer and, on the other, of London as a major subject of (predominantly visual) representation. This conjunction, the chapter argues, was to produce a new branch, in Franco Moretti’s sense, on the tree of the British novel. Specifically, the chapter shows how Dickens’s earliest work, Sketches by Boz, already fabricates, in terms of characterisation and its organisation of the social spaces that could potentially underlie plot relations, a London-driven urban aesthetic that would differ from the principles of what, by the 1860s, became consecrated as the canonical British novel.