What specific obligations would Category 1 designation impose on Wikipedia under the UK Online Safety Act, and how might

What Category 1 obligations would hit Wikipedia

If Wikipedia gets classed as a “Category 1” service under the UK Online Safety Act, it would face several layers of legal duties. The evidence points to these specific rules:

• A set of four extra duties that apply only to the largest platforms – proper risk assessments for adults, steps to protect adults’ online safety, safeguarding content of democratic importance, and protecting journalistic content [7].
• Giving adults more choice over who they interact with and the content they see, including material about suicide and self‑harm [1].
• User‑verification requirements – in practice, that means checking people’s identities [12]. The way the law is worded, services must let users block all “unverified” people from editing, which would effectively force Wikipedia to verify the identity of many contributors [6][9].
• Strict protections for users and regular reporting duties to stop the spread of harmful content [12].
• Age verification or age‑assurance checks for sites that carry age‑restricted or harmful material (the law specifically calls out pornography and “primary priority content that is harmful to children”) [2][3][5]. Whether Wikipedia would host such material is debatable, but the requirement is there if it does.

Wikipedia itself has warned that complying could mean a massive cut in UK user access – by about three‑quarters – just to avoid the Category 1 label or to meet the rules [13][14].

Where the real clash with privacy and open editing lives

Wikipedia is built on the idea that anyone can edit – often anonymously – and that personal data should be collected as little as possible. The Category 1 duties bump hard against that:

• Identity verification kills anonymous editing: the obligation to let users block unverified editors effectively forces Wikipedia to verify people’s identities, which the Wikimedia Foundation says would “undermine their privacy and safety” [6][9].
• Age checks open privacy and security holes: age‑verification systems have long been criticised for creating privacy and computer‑security risks [4]. Both the Foundation and Wikimedia UK have explicitly rejected age verification and identity checks, saying they go against data minimisation, privacy, and editorial independence [10].
• The open‑editing model itself is at risk: the Foundation warns that complying would “compromise Wikipedia’s open editing model and invite state‑driven censorship or manipulation” [11].
• Huge resources could be swallowed: meeting the duties would bring “large technological and staffing needs” that Wikipedia simply isn’t designed for [15] – pulling time and money away from the very things that keep editing open and private.
• A shrunk‑down UK audience hurts openness: if the site has to slash UK access by roughly three‑quarters, that’s three‑quarters fewer potential editors, dealing a direct blow to the “anyone can edit” promise [13][14].

In short, the Act would push Wikipedia into a corner where its core privacy pledges and its whole collaborative, open‑editing philosophy would be very hard – if not impossible – to keep up.