Lol!
I think you'll find in a mature democracy like Britain, you don't need the "right to free speech" we don't need a "first amendment". The right to free speech is implied. It's a given. Like oxygen.
Everyone has the right to free speech since Magna Carta, there is no need to have it written down because we don't have a written constitution of commandments / rules. Thank god.
We do have laws that prevent hate speech and speech that insights mass violence. So if you racially abuse someone, you will face consequences. If you insight a large group to insight mass violence, you can be prosecuted.
That doesn't make us less "free". You shouldn't be able to verbally abuse someone, just like you shouldn't have the right to physically abuse someone. What's the difference? Are you suggesting we're oppressed because we can't go out in to the street without screaming obscenities in people's faces and abuse them for being gay, black, a woman, or whatever, without facing any consequences? That's a right I don't want, thank you very much. If someone is racially abusive, I want them to be punished. I know that's probably different to how many American's think.
Now ask yourself this, would you prefer the right to racially abuse someone, or would you prefer the right to be protected from racial abuse? Similarly, would you prefer the right to be able to insight mass violence, or the right to be protected from people who insight mass violence? I know which I value more.
I think American's often make the mistake of thinking their constitution grants them rights that most other countries don't have. It's actually incorrect. The rights laid out in the US constitution are available to citizens of pretty much every mature democracy. Other than the right to have guns, which is a right none of us want, thank you very much. I'm absolutely delighted Britain doesn't have a formalised written constitution of rules like the US has. It's inflexible, it's out-dated, and ultimately it's dangerous.
That constitution is 300 years old and not fit for purpose in the modern world. It's why you have a school shooting every three days in 2018. It's impossible to change the law because so many people believe so fervently in a 300 year old document.
The law in the UK is constantly changing and it's adept at moving with the times. So after Dumblaine, gun laws can be changed quickly with no fervent defence by right wing zealots of a 300 year old document protecting firearm rights in perpetuity. Guns were probably needed 300 years ago in Britain. They're not any more. We've moved on. We've become more civilised as a society. We banned guns, no more school shootings. Very simple.
Gun laws will never be changed in the US, because there's this cult like obsession with the constitution which are adhered to like a sacred text. It's the same with "free speech" / the first amendment. It doesn't actually grant American's any more rights than we have in Britain. It just means you are more vulnerable to being on the end of hate speech / mass violence.
Lots of Americans thinks it makes them "free" being able to own a gun. But the reality is, it just makes your kids more vulnerable to be slaughtered at school. There's nothing "free" about that.
So to conclude, just because we don't have a formalised constitution set in stone, please don't make the mistake of thinking that means we don't have rights. There is no appetite for a formalised set of rules and constitution here. We don't want or need it.