Romanian and Bulgarian immigrants will still see the UK as the most attractive EU country because of "generous" in-work benefits, a study has claimed.
Migration Watch UK has warned that new curbs to tackle benefit tourism will not deter Balkan migrants because reforms only prevent migrants from collecting out-of-work benefits.
Romanian and Bulgarian migrants already living in Spain and Italy may come to the UK when restrictions are lifted on January 1 because there are "considerably greater" financial rewards.
Migration Watch UK chairman Sir Andrew Green said: "This study shows how Britain's generous benefits system acts as a pull factor for migrants from across Europe.
"There must now be a renegotiation of the benefit system in the EU which was designed before 100 million people in much poorer countries joined the EU. British taxpayers must no longer subsidise immigration from poorer parts of the EU."
More top news
Tony Blair has said Leave campaigners are focusing on immigration "because they've lost comprehensively the debate on the economy".
NBA player Bryce Dejean-Jones has been shot dead after breaking into an apartment he believed to be his girlfriend's, according to police.
Nineteen people have been rescued from the English Channel after the inflatable boat they were in started taking on water.