It is true for emergency care during temporary visits. It's called a European Health Insurance Card (pronounced e-HIC) https://www.nhs.uk/using-the-nhs/healthc

It is true for emergency care during temporary visits. It's called a European Health Insurance Card (pronounced e-HIC) https://www.nhs.uk/using-the-nhs/healthcare-abroad/apply-for-a-free-ehic-european-health-insurance-card/ https://www.nhs.uk/using-the-nhs/healthcare-abroad/apply-for...