How does international migration impact the growth of London?

(You didn't list the answer choices so I will put what best to my knowledge)

London has also been greatly affected by migration. A large number of financial and knowledge-based job opportunities has attracted people from elsewhere in the UK and the rest of the world. It is estimated that up to a third of all international migration into the UK is into London. International migration has been important in reversing London's population decline.

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