Anonymous participant 647 it's not nonsense. You may or may not have tax to pay in Thailand but you can only ascertain that after completing a Thai tax return and claiming a credit for tax already paid in the UK
it was a Russian that was rejected yesterday at HCMC. The one thing he seemed to be missing was a letter from his employer giving him permission to work remotely from Thailand
If you are no longer working you should already have cancelled your work permit and associated extension of stay and left the country. Not cancelling it means you are on overstay
yep, if you are indeed on a visa you do need to leave the country (without a re-entry permit) after cancelling your work permit. You can't actually cancel a visa so all you can do is make it void by leaving. Only tourist type visas (visa, visa exempt, DTV) can convert to another visa type inside the country