Agreed Steve. But the point I was trying to make is that knowing that you write 'a hospital' according to NHS guidelines does not allow you to deduce you should write 'a honest' which you could do if there was a rule. Instead, what you write is determined by an agglomeration of somewhat inconsistent conventions.

Either way, though, the deliberate breaking of them is attention seeking. (Which is, of course, quite a different thing to following a different set of conventions from one of the other varieties of English.)