We're caucasian-same as a hell of a lot of other people. Its all too mixed up to try and specificy anything else.
Look at me-I'd say I'm a fairly average white Brition and yet:
My grandpa's side can be trace back to Normandy pre-1066 (he came over in the conquest)
My grandma can be taken back to France in the 1600's
My Grandad roots are in Italy in the 1800's
My Grandma's grandmother is chinese.
I also have Irish, Scottish, American DNA along with a fair helping on Chinese, British and French. What am I?
The answer is, of course, British just like everyone else who is born here no matter what their ethnic background is.