“Anyone can edit Wikipedia” is a well‑known maxim, but the reality is that the site’s content is shaped by a comparatively small community of contributors. Wikipedia’s editorial decisions are largely made by roughly 270,000 active volunteers who determine what is notable and how topics are presented, leaving some areas underrepresented.
Last week, about two dozen volunteers met in a central London classroom for a “wikithon” — a coordinated, in‑person editing session — aimed at strengthening entries related to the arms industry. The participants ranged from veteran editors in their 70s to students who had never before registered an account, and the event included communal food, with organisers providing vegan Ethiopian dishes.
Editors at the session focused on a mix of corporate and programme pages, working on topics such as Palantir, Project Maven and Nitro‑Chem. The effort forms part of a broader push to bring more detailed information about defence contractors, military technologies and related controversies into the public domain, and to address subjects that volunteers say are often sidelined on the site, including issues tied to the global south and the representation of notable women.
Organisers and participants framed the work as both technical and editorial: adding sourced material and references while navigating Wikipedia’s rules about notability, verifiability and neutrality. The gathering reflects a wider trend in which volunteer editors and new recruits collaborate to fill perceived gaps in coverage, balancing the encyclopaedia’s open‑editing model with the practical choices of what gets documented and how.