How long can a UK citizen stay in Thailand without a visa currently?

And, possibly chages back to 30 days may be country dependent..as indicated by others, impossible to tell, and wise to get single entry tourist visa..which will be forwarded to you in .pdf format..60 days and possible to extend another 30. The fact that is an "official" visa ..not "exempt"status may make all the difference when the changes take effect.

60 days but that maybe going back to 30days

60 days nothings changing back at the minute so don't worry about that

As it stands, it's 60 days

Right now it's 60 days visa exempt but talk of it changing back to 30 days but no confirmation or even dates discussed yet so right now it's 60 days

It's on govt website as 60 days but check back in case of any changes.

60 at the minute but possibly going to change back to 30

Possibly doing to change to 30 days. Other opinion is 60 tourist visa.

At date you’ll get a 60 days visa exemption and free stamp upon arrival.

Currently visa exempt is 60 days. There are proposals in the government to change it back to 30 days, but the last report was that they are still mulling it over. At this point no one knows if or when it will change. It might remain at 60 days, it might change to 30 days.