There is a website about the UK OSA from Neil Brown, a UK lawyer with his own law firm that specialises in tech law. It should be noted however that nothing on that website officially constitutes as legal advice, regardless of the expertise or profession of its author.
There are also notes for smaller sites from Russ Garett, a non-lawyer who has extensive experience dealing with UK tech law:
https://russ.garrett.co.uk/2024/12/17/online-safety-act-guide/
Same as before, nothing on that website is officially considered as legal advice.
Discourse (read: Haiku’s forum software) CEO on the OSA:
Barring Haiku, Inc. hiring an actual UK lawyer specialising in tech law or one of those providing pro bono services, realistically the only safe options left at the moment are:
- Geoblock the UK
- Shut down the Haiku forum (and other affected sites) entirely