Koh Phi Phi police have been cracking down on illegal workers on the islands and have arrested a British national along with five Burmese workers on Tuesday.
Police said they arrested 28-year-old Benjamin Richard Stone at a restaurant on Koh Phi Phi on Tuesday.
The arrests followed a tipoff that the British suspect was illegally selling tour packages to tourists without a work permit. He is facing charges of illegally working, which he denies.
Immigration police said he flew to Phuket on February 4 as a tourist from Malaysia.