The novel is set in Great Britain, principally in London, although that city as seen in the future has spread all the way to the sea. Greater London now embraces the seaside town of Brighton, as well as many formerly outlying provinces. The two main protagonists live in Brighton, where key government buildings also are located. Another setting that plays a role in the story is the seaside promenade in Brighton, which represents contact with Nature's powers of renewal and regeneration. Both Tristram and Beatrice-Joanna journey during the novel into the Northern Province, which is rural and affords a degree of sanctuary from the strictures and power of the government and its soldiers and policemen.