23/05/23
They're starting to contact members who are sharing Netflix outside their household
about.netflix.com/en/…-gb

Extra members info
help.netflix.com/en/…279



Old update 01/02/23
This is based around a Primary location, currently it's only detailed in their Help section of some countries they're trialling it in, such as Chile, Costa Rica and Peru
How to set or update a primary location - Peru
Sharing your Netflix account - Peru

It doesn't currently apply to UK
How to set or update a primary location - UK
The ability to set or update a primary location isn't available for this country.
Sharing your Netflix account - UK