I think doctors have to ask for ID if they suspect someone is not eligible for free treatment. I know this happened for two of my friends and they had to show I

I think doctors have to ask for ID if they suspect someone is not eligible for free treatment. I know this happened for two of my friends and they had to show ID at A&E, but that was during the heat of Brexit campaign, so this could make doctors feel encouraged to do such checks. I have not heard about it for a long time now though.