yes, as long as 14 days remaining on the existing visa or exemption (told and been given even the last qualifying day by immigration officer in Sri Racha when enquiring).
it is not as simple as that: the thai system will calculate the tax on worldwide income in line with their Income tax system including personal allowance. Then they will credit the amount with income tax paid in UK and the difference if any is due to the Thai Tax authorities. I have undertaken such excercise in another asian country and used my UK tax return as supporting evidence. Interestingly, both systems were quite similar and the net amount due to this asian country’s tax authority was actually only £300. However professional fees can amount to much more and i now make sure i am nowhere more than 180 days in any financial year and just deal with UK tax system (be careful with the dates of financial years in different countries) The world is big enough any way.
Baht is a small % fee and compensation for not needing to look for and go to a physical exchange bureau. Additionally, being “abroad” most of the year i asume i do not have really have a choice; carrying cash around is a huge risk and the 220 baht fer is a small fee to pay instead.
Does it need to be in Bangkok. Personally i am exploring a bit out, on the beach as air quality is very important to me … Sriracha seems to have some lovely condos with view of the ocean …