I don't see Thailand in there.
The list of countries who happily accept a UK driving licence without a problem are:
  • Austria, Belgium, Bulgaria, Czech Republic, Republic of Cyprus, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Liechtenstein, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovenia, Slovakia, Spain and Sweden
Is Your Driving Licence Valid Abroad? - About Driving Abroad (UK)