This article presents a practice-based account of collection development related to zines in the British Library. Rather than making the case for the collecting of zines, it aims to describe the process of collection building in a specific time and place, so that researchers have a better understanding of why certain resources are offered to them and others are not, and to share experiences with other librarians with zine collections. Zines form an element of the cultural memory of activists and cultural creators, and for researchers studying them it would seem useful to make transparent the motivations, methods and limitations of collection building. Librarians in the USA have written about their collecting practices for some time, for instance at Barnard College1 and New York Public Library2, there has been less written about the practices of UK libraries. The article aims to make a contribution as a case study alongside accounts of collection development in a range of other libraries with zine collections, and it is written primarily from my own perspective as a curator in Contemporary British Collections since 2015, focusing on current practice, with some reference to earlier collecting.