Thanks, Brian. I suppose my question should really have been preceded by "do we know enough to answer this question: ". As I've said, I don't know a lot about Lloyd, and one of the problems with not knowing a lot is that you don't know what it is that you don't know but other people do.

Which is a slightly roundabout way of saying I wasn't asking anyone to do loads of work to answer that question - just asking whether anyone already knew the answer. It looks as if it's a much bigger question than I realised. (The EFDSS doesn't award research grants, by any chance?)