What are the current tourist visa rules for UK passport holders in Thailand as of September 2026?

As of August 31, 2026, the Thai government published new rules indicating that starting September 15, 2026, the tourist visa exemption for UK passport holders will revert to a validity of 30 days, reducing the previously allowed 60 days upon arrival. This change follows various discussions about visa regulations, and while there had been confusion regarding terminology—particularly between 'visa on arrival' and 'visa exemption'—the updated rules clarify that for UK citizens, a 60-day visa is no longer in effect. Ongoing discussions had suggested possible changes, but the publication confirms the transition back to a shorter duration.