One thing I was wondering about is, when entering British airspace the controller have on several occasions asked wether or not we were RVSM equipped, we answered no because we had no information from our company that we were. The controller then said that according to his info we were??.
Another operator was asked the same, and answered yes. The controller then said according to my info you are not.
But who's info is it that is "legally binding" so to speak. I suspect it is the controllers, but if that is the case why ask?.