I wouldn't expect a UK 3 pin socket. Usually a two pin round or two pin flat - see http://whatplug.info/from/uk/to/thailand
A tip which you might not be aware of. We take a 4 plug adaptor (power board) with us so that you only need one adaptor to plug this in then you can plug in upto 4 devices (phone, battery chargers, hairdrier etc) each with their UK plugs at the same time. Saves you taking more than one adaptor.
Great advice - thanks
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