The Wikimedia Foundation challenged the UK's Online Safety Act (OSA) Categorisation Regulations, arguing that they could impose stringent obligations on Wikipedia and undermine the privacy and safety of its volunteer contributors. The UK High Court dismissed the challenge, but emphasized the responsibility of Ofcom and the UK government to protect Wikipedia as the OSA is implemented. The Foundation will continue to advocate for safeguarding public-interest spaces like Wikipedia. The case highlights the potential risks of the OSA to online knowledge and freedom of expression.