Please excuse my stupidity/ignorance. Is it still possible for a UK passport holder and a Finnish passport holder to get a visa on arrival, and if so how long would this be valid for.
All the best Simon xx.
TLDR : Answer Summary
UK and Finnish passport holders do not get a traditional Visa on Arrival. Instead, they are eligible for a visa-exempt entry, which grants them a 30-day entry stamp upon arrival in Thailand. This stamp can be extended once for an additional 30 days at Thai Immigration for a fee of 1,900 Thai baht.