The unfortunate, but understandable, fallback suggestion from thehamsterforum of all moving over to Instagram shows why large corps _love_ laws like this. More laws just raises the barrier to entry until only those that have entire office blocks of lawyers can afford to participate.
You can afford to be so flippant because in the chance that Ofcom's enforcement will lead to prison or another punishment, it won't be you who's suffering it.
https://www.thehamsterforum.com/threads/big-sad-forum-news-o...
(Yes, the UK has effectively made it illegal to run a forum for people with pet hamsters.)