How do you let your family members (mom ,brother, and father) know you want to keep your distance from them?

Me and my family always bicker and fight/argue when we do get together. I've found that the best way to get along and have a good relationship with them is to keep far away and that long distance relationship works the best. NOW, i've emigrated from the US to the UK and found out that maybe my brother wants to move here as well. I really want to see them as little as possible. How do I go about doing that if we're both living in England? I can't stand my families arrogant ways (especially my step brother). How do I keep a long distance relationship without really hurting his feelings?