Do you need a green card to immigrate to Britain?

How can I immigrate to Britain without applying for a' green card' (that is, a permanent resident whose status is now commonly known as a' green card' in Chinese)? This question is a bit incredible.

In other words, your immigration is to apply for a "green card", so there will be no question of whether you need to apply for a "green card" if you want to immigrate to the UK.