Free tests for Coronavirus are coming to an end in the UK and the final travel restrictions for arrivals into the UK have been scrapped the picture is still confusing for travellers from the UK. Where do citizens in the United Kingdom go to get PCR tests for proof of not having got Covid-19?

It appears that if you are travelling to America from the UK you will still need to provide a negative LFT (or PCR) test taken within one day before your flight regardless of your vaccination status. Trying to get definitive answers result in  searches of airlines, paid for testing websites and Government websites. The cheapest test either at a local clinic or at the airport is £29.00 and ranges up to £50. I just can’t see the justification for the prices and why can’t a simple LFT test taken at home and registered with the Government’s website be acceptable?