On the 1 January 2014, Romanians and Bulgarians will have the same right to work as Poles did about a decade earlier.

Many UK politicians fear that this will mean a massive influx of immigrants, such the Polish immigration was in the 2000s.

But did Polish immigration have a negative or a positive impact on UK's economy?

Does this kind of immigration really increase the demands of Britain's welfare system and strain it, as many British fear?

Or does it fill British towns and cities with aspirational youths from Eastern Europe, as many proponents of European integration highlight?

[Source: The Economist – http://econ.st/1jb1AeA ]