500 users is an extremely small forum! This one already has 724. If I have to be responsible for your post contents I will (probably) resign immediately!Lucy Powell MP (some xxxx for Labour who doesn't know how the internet works, but knows "hate speech" when she sees it) is proposing an Online Forums Bill that requires content moderators to be responsible for content posted.
https://services.parliament.uk/bills/20 ... orums.html
"A Bill to make administrators and moderators of certain online forums responsible for content published on those forums; to require such administrators and moderators to remove certain content; to require platforms to publish information about such forums; and for connected purposes. "
There is an exemption for small forums - which are considered 500 users or less
Removing undesirable content is reasonable, but being legally responsible is quite another matter. I've no wish to be hauled before a court for something a forum member said.
There are closed groups on Facebook about Daimlers which would be caught by this Bill.