The qualifications for TEFL teaching are exactly the same in the UK as in Thailand. TEFL jobs in the UK though are mainly seasonal and very badly paid. Starter TEFL jobs here in Thailand are equally badly paid, but having been doing it for 20 years, I now make around 1,000 baht an hour, plus have a lot examining work, all of which doesn't require a lot of effort, which is good as I'm 64.