Yes they will not be charged for any treatment related to COVID 19.
https://www.nhs.uk/nhs-services/visiting-or-moving-to-england/visitors-who-do-not-need-to-pay-for-nhs-treatment/
COVID Testing
Yes they will not be charged for any treatment related to COVID 19.
https://www.nhs.uk/nhs-services/visiting-or-moving-to-england/visitors-who-do-not-need-to-pay-for-nhs-treatment/