I lived for over a decade in Britain and had both afro-descendant and muslim friends who were discriminated against over there, even before Brexit.
Even I got discriminated against because of being Portuguese (though nowhere are much as they did).
Britain has for long been one of the most rightwing countries in Europe, it’s just that they’re very good at image management and their far right leaders are posh types with upper class education and accents, not slang-using rabble rousing loudmouths with low-class accents.