Damn that sucks that in the UK you cant pick your own friends or associate with only people of your background, talk about big brother. Glad that here in the good ole USA I can hate brown people, yellow people, green people, white people, black people and purple people freely.
Racisim is stupid, being butt hurt that some one is racist or only associates with "their own kind" is even dumber. As some one in an interracial relationship with an interracial child and in the south, I can tell you that white people are FAR more open to race than any other group.
OP, is the person threatening harm to you or just proud of her Anglo Saxon heritage which as you know is becoming less and less of a majority in your country? If she isnt harming you, why is having just white friends bad? I have just straight friends, doesnt mean Im gonna commit a hate crime on the next guy I see with a Louis Vuitton breifcase.