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LONDON, ENGLAND - MARCH 04: United Kingdom Independence Party leader Nigel Farage speaks during a conference in which the party's immigration policy was unveiled on March 4, 2015 in London, England. Farage stated that UKIP wants immigration to return to "normal" levels with around 20,000 to 50,000 migrants issued with work permits. (Photo by Carl Court/Getty Images)

LONDON, ENGLAND - MARCH 04:  United Kingdom Independence Party leader Nigel Farage speaks during a conference in which the party's immigration policy was unveiled on March 4, 2015 in London, England. Farage stated that UKIP wants immigration to return to "normal" levels with around 20,000 to 50,000 migrants issued with work permits.  (Photo by Carl Court/Getty Images)