I don't really disagree with you Pape, the only thing is (getting back to definitions here), I don't think geographic regional cultural variations are example of multiculturalism. They are not separate cultures, it is fairly petty examples of things like accent etc.

As for Britain adopting foreign things like vindaloos as part of national culture, again this is petty things like food. I don't contest the foreign influence in these things, what I don't like is foreign influence in terms of real values and having any social impact.

How can you compare having a curry with covering your wife in a burkha?

I feel there are many inappropriate comparisons and attempted parallels being flung about in this thread.