Singapore has been ranked as the best place in the world to live for expatriates.

The survey, carried out by expat social network InterNations, asked at least 50 of its users in each country of the world to rate factors such as happiness, health, political stability and 'peacefulness'.

The city-state ranked first in overall 'quality of life', largely owing to its excellent travel and transport facilities.

It was also commended by users for its high level of personal safety. However, Singapore received a significantly poorer score with regards to healthcare. A total of 33 per cent of respondents said they were unhappy with the Lion City's medical costs.

Ecuador and Austria took second and third place in the index respectively.

The 'personal happiness' of expats in the South American country was ranked higher than in any other, while those living in Austria's clean Alpine air reported the highest level of safety and well-being.

The most expensive cities in the world 2015 Show all 10 1 /10 The most expensive cities in the world 2015 The most expensive cities in the world 2015 1. Grand Cayman, Cayman Islands The largest island in the Cayman Islands group, Grand Cayman is the most expensive city in the world to live in David Rogers/Getty Images The most expensive cities in the world 2015 2. Zurich, Switzerland Switzerland's largest city, Zurich, takes the number two spot FABRICE COFFRINI/AFP/Getty Images The most expensive cities in the world 2015 3. London, United Kingdom The British capital of London is the third most expensive city in the world Chris Jackson/Getty Images The most expensive cities in the world 2015 4. Geneva, Switzerland One of three Swiss cities to appear in the top 10, Geneva is the world's third most expensive city Mike Hewitt/Getty Images The most expensive cities in the world 2015 5. New York City, USA The Big Apple is the fifth most expensive city in the world Afton Almaraz/Getty Images The most expensive cities in the world 2015 6. San Francisco, USA San Francisco, on the other side of the country, comes one place behind NYC Ezra Shaw/Getty Images The most expensive cities in the world 2015 7. Washington, DC, USA America's seat of power, Washington, DC, is the 7th most expensive city Brendan Hoffman/Getty Images The most expensive cities in the world 2015 8. Bern, Switzerland The Swiss capital is the 8th most expensive city in the world FABRICE COFFRINI/AFP/Getty Images The most expensive cities in the world 2015 9. Hong Kong The city-state of Hong Kong is the ninth most expensive city in the world PHILIPPE LOPEZ/AFP/Getty Images The most expensive cities in the world 2015 10. Singapore Another city-state, Singapore, edges in to the top 10 most expensive cities in the world ROSLAN RAHMAN/AFP/Getty Images

Spain, Israel and Australia all featured in the overall 'quality of life' rankings, with the latter also being judged to have the widest range of leisure options.

The United Kingdom, however, did not make the top 20, finishing 31st in the standings.

InterNations Quality of Life Index 2015

1. Singapore

2. Ecuador

3. Austria

4. Switzerland

5. Portugal

6. Spain

7. Japan

8. Czech Republic

9. Germany

10. South Korea

11. Hungary

12. Costa Rica

13. Australia

14. France

15. Israel

16. Netherlands

17. Malta

18. Thailand

19. Canada

20. Luxembourg

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