The Office for National Statistics reveals that, the total number of Romanian nationals rose by 25% from 2016 to 2017, reaching 411,000 making people with Romanian nationality become the second most common non-British population living in the UK.
Of the 65,176,000 residents in the UK, 6.2 million were non-UK nationals - up by 4%.
The number of people living in the UK but born abroad was up by 3% from 2016 - 9.4 million of the total population.
A problem with the collection of statistics means there is no overall net migration figure.
The government has committed to a target to reduce net migration to below 100,000 in its manifestos of 2010, 2015 and 2017.
The figures show that 61% of the non-UK nationals number - or 3.8 million - are from the EU.









