According to migration statistics Poland has overtaken India as the most common non-UK country of birth for people living in the UK, the Office for National Statistics figures show.
It comes as net migration estimates show it remains near record levels, at 327.000 for the year to March.
The figures – for the period before Britain voted to leave the EU – are down slightly on the previous year.
Net migration is the difference between the number of people coming to the UK for at least a year and Those leaving.
There were an Estimated 831.000 Polish-born residents in 2015 – a jump of almost 750,000 compared with the number in 2004, the year the country joined the EU. India and the Republic of Ireland have traditionally been the sources of the UK’s largest foreign-born groups.
The latest net migration figures show a slowdown in the numbers settling in the UK from Poland and seven other former Eastern bloc countries – but that was offset by an Increase in net migration from Bulgaria and Romania, Which hit record levels of 60,000.
Nicola White, ONS Head of International Migration Statistics, said: “Net migration remains at record levels although the recent trend is broadly flat.
“The influx of Romanians and Bulgarians has also reached With a new high, although that’s off-set by falls in non-EU immigration and from other central and eastern European countries.
“Work remains the main reason for migration, followed my study by Which has seen a Significant fall in the number of people coming to the UK for education.
“It’s important to remember That These figures only go up to the end of March and do not cover the period Following the UK’s vote to leave the European Union.”
She said the UK’s population continued to Increase between 2014 and 2015, driven by “Significant Increases in both the non-UK born and non-British national population of the UK.”
ONS estimates show 13.3% of the usually we resident population of the UK were born abroad, compared with 8.9% in 2004.
The region with the highest proportion of non-UK born residents, at 37%, is London.
More than 25% of births in England and Wales in 2015 were to women born outside the UK, the highest level on record, According to separate figures.
ONS statistician Elizabeth McLaren said: “The rising percentage of births to women born outside the UK is largely due to foreign born women making up an Increasing share of the female population of childbearing age in England and Wales.
“Part of the reason for this Is That migrants are more likely to be working-age adults rather than children or older people. Alongside Increasing Their share of the population, higher fertility among women born outside the UK has also had an impact. ”