How do you say i how are in British?

The British English equivalent of "How are you?" is simply "How are you?"

There are some regional variations or more informal ways to ask:

* "How's it going?" (More casual)

* "How are you doing?" (Slightly more formal than "How's it going?")

* "How do you do?" (Formal, mostly used when meeting someone for the first time)

However, the most common and natural way to ask someone how they are in British English is simply "How are you?"