I think we should be nice to you dexter because you are obviously trying to be helpful, and English doesn't appear to be your first language. Nobody with even a nodding familiarity with the UK airspace system would have mentioned class B in the way that you did.
Why don't you re-read what has been posted before by people like keef, englishal and 2 donks. They talk a lot of sense, they have produced the right answer, and you are not really adding to that.
Sorry to be a a bit cruel, but you know what they say...
Love
Charlie
x