For sure. One or two super paranoid banking apps but literally everything else works great with microg.

So extradition varies greatly. But generally (extremely generally, treaties vary a lot) countries will extradite if what the person is accused of is:

1. A crime in both countries
2. Carries a penalty of at least 6 months prison in both countries

However basically no country will accept extraterritorial claims of another state simply because it impinges on their own sovereignty. It makes the UK somehow more soviergn than the country where the supposed crime was committed, in this case the US.

The exception to the above rule tends to be crimes against humanity and war crimes. But obviously that is irrelevant to this case.

You are correct that were they actual charged with a crime for violating this act they could not go to the UK.

If they have no infrastructure or legal presence in the UK they are not required to do shit. The UK can block them but that’s about it.

The UK does not have extraterritorial jurisdiction! Whatever stupid shit they do on their shitty little island does not affect foreign firms that do not operate there.