Just caught up on this thread. For the Act it doesnt matter where the website is based or how it is run. If you have user2user content and UK users you are covered. What you then need to do depends on the number of users and how "risky" the content is.
So presumably this would plausibly result in UK users being banned from any overseas based sites who CBA to fall foul of UK based legislation? A bit like many US sites just block UK users due to not wanting to comply with GDPR legislation.
Just caught up on this thread. For the Act it doesnt matter where the website is based or how it is run. If you have user2user content and UK users you are covered. What you then need to do depends on the number of users and how "risky" the content is.