Thailand has changed its immigration rules to deter foreigners from 41 countries, including the UK, from working illegally on tourist visas. The old arrangement allowed visa-free tourist entry for 30 days. Many tourists were taking advantage of this by leaving Thailand every 30 days to a neighbouring country and then returning. Under new regulations it will only be possible to do this for a total of 90 days, after which the visitor must leave the Kingdom for 90 days before returning.