>Romanians constitute the fourth largest group of immigrants in England and Wales as of 2021, only behind those from Pakistan, Poland, and India. The decadal growth of 576% was the highest of any immigrant group and was driven by the relaxation of work restrictions.[5] Furthermore, as of late 2022, given the big rise of Romanian immigrants to the United Kingdom, the Romanian language became the third most spoken language in the UK after English and Polish.

Any time I think Brexit was wrong I just look at these stats.
When were they allowed in? 2014

EU freedom of movement was 2014


2014-2022
4th Largest immigrant group in the entire country
3rd most spoken language

The rest of the EU, well you can see their numbers