10. United Kingdom
Known as one of the financial capitals of the world, the U.K. is popular with expats from every country.
Expatriates relocating to the U.K., and London in particular, can expect to pay a hefty price tag for housing. The city was ranked the 18th most expensive city on Mercer's Cost of Living Survey in 2011, making it the most costly city in the U.K. Wages generally reflect this, but be prepared for sticker shock when searching for an apartment or going to the grocery store.
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