This chapter examines Shelley’s relation to the periodical print culture associated with the revival of political radicalism in the 1810s. It offers a summary overview of the generic and ideological diversity of the reformist press in this period and provides a broadly chronological account of Shelley’s interactions with radical journalism. His religious scepticism brought him into contact, early in his career, with the ‘unrespectable’ literary milieu associated with Spencean freethought, but Shelley soon moved into the more socially congenial circle of the celebrated poet and reformist newspaper editor Leigh Hunt. Despite his enduring concerns about the potentially revolutionary consequences of cheap print, Shelley was a committed reader of William Cobbett’s Political Register, and the influence on his writing of the post-war radical press – including both the Register and Hunt’s Examiner – was sustained even after the poet’s departure from England in 1818.