Thaks guys, clear as mud. mr Guppy you are a Star. That was what I was looking for. The "official" line. Thank goodness I am of to Cuba for my next trip and this problem will not arise.
As a postscript the Trans Atlantic confusion works both ways. A couple of weeks back an American Airways 757 was following me into a large airport in the North West of England and he sounded most upset when he was not "Cleared to Land" on his handover to the tower. Guys, over here you will not be cleared to land until there is no one infront of you and no one on the runway.