This is funny, because I'm pretty confident Amelia Eve is actually English, and wasn't putting on that much of an accent at all.
This is why I never feel comfortable talking shit about people's accents whether it's a fake accent or their own. Seems like the stupidest thing to complain about IMO. Like sure, I know that Henry Thomas isn't english, and his accent was not great based on what I've personally heard from western european accents, but for all I know, there are actually people who have similar accents... because that's just how the talk. I dislike Boston and New Yorker accents, doesn't mean I think it's a terribly fake american accent though.