UK is covering any out-of-pocket costs, such as co-pays, for getting tested for COVID-19 if you are exhibiting symptoms of COVID-19. This means any symptomatic employee with a UK health insurance plan is not expected to pay any costs associated with being tested for COVID-19.
Treatment for COVID-19 is covered just like any other illness. Treatment and any subsequent related costs will be covered according to the provisions of the insurance plan, just like any other medical need. For more details, review your UK health insurance plan.