Are expats covered by NHS?

If you’re moving abroad on a permanent basis, you’ll no longer automatically be entitled to medical treatment under normal NHS rules. This is because the NHS is a residence-based healthcare system.

https://www.nhs.uk/using-the-nhs/healthcare-abroad/moving-abroad/planning-your-healthcare/#:~:text=If%20you’re%20moving%20abroad,a%20residence%2Dbased%20healthcare%20system.