Is the visa exemption for UK passport holders in Thailand still valid, and what is the process to obtain it?

Hi everyone,

I spent a few years in Thailand and Vietnam and am booked to return to Thailand in January.

I'm a UK passport holder and I only plan to spend a few weeks in Thailand. I have onwards travel booked and a hotel booked for the first few days (to recover from the journey) 😊

I can't remember how the visa system works as it has been a few years since I entered last, but I'm pretty sure I just go for the visa exemption?

Is this correct please?...and if so, what is the process for this? Is there a form to be filled out before I go, or do they do it once you arrive there?

Also, is there anything else I need before I fly?

Sorry for all the questions, and many thanks in advance for any help given!