UK is trying to be like Russia and China, where a minder will show up at your door if you post something the government doesn't like. Then people online will defend it because the investigation didn't turn into a full criminal charge or they say the people simply deserved it.
The reality is this will seriously chill speech broadly across the country regardless of either of those outcomes, and the technical costs of enforcement will be steep.
We don't have any pro-free-speech political parties, nor a written constitution unfortunately.
I mean there are parties that say they like free speech, but it never extends to the sort of speech they disagree with, or by people of the wrong colour/religion/gender etc.