In the US, something has to explicitly be made legal to be permitted. There has to be a law saying you have the right to do something.
In the UK, something has to be specifically forbidden by law, and even then it's very unlikely that such a law will ever be enforced unless you're really making a nuisance of yourself.
US uses Common Law as derived from the UK's Common Law. In theory in both countries something has to be specifically forbidden.
In practice that's not something I'd bet my not-being-in-jail on in either country. Whatever foundation of "anything not forbidden is permitted" has been crusted up with so many layers of governmental power grab that whatever the theory may be, the practice is that if it is not explicitly permitted it is forbidden, and the only reason things not explicitly permitted are allowed is because they just don't happen to make a fuss about it today.
It's fairly correct regarding copyright, where the default is essentially that the creator owns the material and then every fair use is carved out as an exception to that default assumption.
This makes fair use an affirmative defense, which is default risky because the process starts with somebody accusing you of wrongdoing (potentially criminal wrongdoing).
Yeah that is incorrect, and The Founders of the United States are crying right now.
One of the reasons that some members were opposed to the bill of rights was because they were afraid that the population would take it as a defining list of things they were allowed to do, as opposed to the stated: "The Powers not delegated to the United States by the Constitution, nor prohibited by it to the States, are reserved to the States respectively, or to the people."
In the US, something has to explicitly be made legal to be permitted. There has to be a law saying you have the right to do something.
In the UK, something has to be specifically forbidden by law, and even then it's very unlikely that such a law will ever be enforced unless you're really making a nuisance of yourself.