A few years ago I worked for a shiping company that imported lots of different products from Thailand! One of our biggest imports from los was condoms! In fact the British NHS was the one of the biggest buyers of these, so when you get your free johnnys from your nurse to take to Thailand, your just taking them back on the return trip!
That said too, I did for a time work for Boots in Nottingham (There head office). And i can say that the condoms in there shops in los (or anywhere around the world to an extent) are the same ones sold in England!