Can we actually use Apple Airpods hearing aid features in the UK?

Hi. Sorry if this has been asked before but I just cannot seem to get a streight answer on this.
Airpods pro 2 let me take a hearing test, that’s in no doubt. It uploads the audiogram to health. That’s all fine. But how on earth do I get the airpods to act in HA mode? everyone talks about this magical button that pops up afterr you’ve taken the test but no such button exists for me. Others say you can upload a previous result but again I see nowhere to do this.
Have people in the UK done this before? I know a lot of the features were previously locked out for us and am wondering if this is still the case?