your right about the max stay is 6 months in one visit, but i don't think it's written anywhere in immigration law says you can only stay in the uk 6 months in anyone year, i know of many people who have stayed 6 months, gone to Europe for 2 or 3 wks and come back to the UK. but like i said immigration officers will not like it, and will probably question you about it.and could refuse you entry to the uk. so not a good idea
