We haven’t given up the rights you mention, we have allowed through apathy their power to be denuded or chipped away at. We have the right to bear arms but have allowed or even supported bad gun laws, we have freedom of speech, but have allowed govts to abuse laws and curtail said freedom. Same with due process and freedom of religion.
Sometimes we still have the right and simply don’t use its power.
Well, to me that’s a matter of semantics. Yes, of course, everyone still has those rights, because they are natural rights, you have them as long as you are alive, no matter what government you live under. However, if you live in the UK, you can’t freely exercise those rights without risking going to jail or suffering other penalties.