I mean, almost the whole point of the British is that they fucked over everybody. Americans, Chinese, Russians, Australians, Canadians, Indians, all have plenty to blame the British for.

Even a bunch of people who by rational assessment would count as British can reasonably say the British fucked them over because of a series of Tory policies, first destroying the paperwork which proves they came here by invitation (on the Empire Windrush and other ships), and then insisting that since they don't have that paperwork if they haven't already secured citizenship papers they were never authorised to be here and must be sent "home" - in some cases forcibly deported to countries they hadn't been to in more than half a century. See "Windrush scandal".