Not really, Brits get roles because they are cheaper.
The US gives them a cutout in SAG rates that they exploit.
This is why you see them in American film, doing generic accents, and being over praised by the media.
They do shytty american accents, they use wrong terminology in film, like saying the boot when they are supposed to be americans and the editors letting it stay in.
There is only one UK actor that does American exceptionally well and thats Delroy Lindo. They rearely praise him for how good he does his american accents, but give praise for jude law, micheal caine, and etc when they do shytty antiquated southern accents or "western" accents. lol
The two gay guys from Atlanta, paperboi and the weirdo guy are excellent actors and do great accents, but they are eccentrics.