Can UK passport holders still extend their stay in Thailand from 60 days to 90 days, and how is this done?

Currently, UK passport holders can enter Thailand and stay for 60 days. They have the option to extend their stay to 90 days. To extend from 60 to 90 days, you need to apply for the extension within 30 days of your arrival date at the local Thai Immigration office. Specific requirements may vary, so it's advised to check with your local immigration office, like Jomtien Immigration in Pattaya, which accepts applications during the week prior to your stamped-in date.