Can I get an accepted PCR test in Lopburi for my flight to the UK on January 20, 2021?

The user inquires about obtaining a PCR test in Lopburi that is accepted by airlines for a flight from Bangkok to Manchester on January 20, 2021. In the comments, there are mixed opinions; one user claims a PCR test is not needed to enter the UK, while another insists on the necessity of a PCR test for their particular airline, Etihad. Alternatives like the ATK flow test are offered, highlighting that regulations can vary among airlines.