As I promised earlier, the gov/NHS info about testing:
"Anyone who has symptoms of coronavirus (COVID-19) can get a free test to check if they have the virus. Some people without symptoms can have the test too."
https://www.nhs .uk/conditions/coronavirus-covid-19/testing-and-tracing/get-an-antigen-test-to-check-if-you-have-coronavirus/ (REMOVE SPACE AFTER 'NHS')
Scroll down that page to get to the bit where you apply for/order a test. "This service is for everyone."
So yes, you, me, we are all entitled to a test. Just need to ask for it.