this article says they are illegals meaning they came in illegally. Brexit let them not have to legally let them in but it's like how chicago banned guns yet somehow they magically appear in criminals hands. Brexit was still good to do though, why make it easy on them. But now they must enforce laws and send them back. Less total immigrants came in september 2020 than all of 2019 it's just that more illegals came, that's because it used to be legal for any and all to come whenever they pleased. 7 thousand illegals is better than 100,000 legal immigrants. They still need to go of course.