This article investigates the aesthetic of the twentieth-century Metropolitan Police box and its ongoing association with the TARDIS time machine from the BBC’s television science-fiction show, Doctor Who. Doctor Who fans explore the police box aesthetic through its multiple identities, where it is celebrated, investigated and recreated. This article draws on Catherine Johnson’s theories of pseudo-diegesis and extra-diegesis to demonstrate how such fan interests have a visible effect on Doctor Who’s ongoing production decision-making. In doing so, this article argues for greater attention on non-human social actors within adaptation, and how consumer interest, enacted in multiple ways, has potential power in the shaping and reshaping, of the diegetic worlds of ongoing serializations.