For me, the UK's not 100% home, just about 95%, but, that's only because we still live with the in-laws, and I can't totally, truly be myself(grunging around in my bathrobe and blaring pop music when ever I feel the impulse, that sort of thing). If we had our own place, the UK would be completely home to me.
I only think of my family's homes(Dad and his wife-she's only 4 years older than me. Can't honestly call her a step-mom, and my brother, in San Diego; and my aunts' house in Chicago) as places that have good memories, and places that I could comfortably go and visit, but, not stay permanently. I lived good and bad parts of my childhood, adolescent and young 20's life in both places, but, they're still nothing without DH.