„Flows of labour into and out of the United Kingdom through migration have an important impact on the supply of skills. Sustained inflows of well-educated immigrants have boosted the skills and size of the working-age population in the United Kingdom over the last 20 years, and the share of the working-age population born outside of the UK is now double the 1995 level and on par with other OECD countries. […] Over the last few years, the goal of UK immigration policy has been to encourage immigration of skilled migrants while reducing overall immigration. As a result of this selective migration, immigrants to the United Kingdom are younger and more educated than their UK-born counterparts, and this educational attainment gap has risen over time.“
OECD (Hrsg.), „Getting Skills Right: United Kingdom“ (2017), S. 16