It depends what you want to be free to speak about.

"All the environmental stuff is false and climate change isn't real" = This is acceptable free speech in the UK.

"COVID was all lies and isn't real and everyone who died was faking it" = This is acceptable free speech in the UK.

"Let's kill foreign people and sink their boats so they all die" = This is acceptable free speech in the UK.

"Trans women aren't real women and they shouldn't be allowed to use public toilets, vote or have jobs" = This is acceptable free speech in the UK

"We should form a mob, burn down half of our local city centre, destroy scores of local small businesses, drag foreign-looking people out of cars, sexually assault any foreign-looking women we see and basically trash an entire postcode of a city causing fear and terror to everyone who lives there" = This is acceptable free speech in the UK, and what poor, adorable, misunderstood patriots they are.

"I'm not 100% convinced that everything Israel does is entirely perfect" = This is NOT acceptable free speech in the UK. You are a terrorist, we will send 12 officers to kick the shit out of you, and then you will be arrested and locked up for months without trial, then convicted as a terrorist.