Well...

To be honest; I no longer play England b/c altho the 'patched' AI is a little better about using fleets to invade; it just never put me in any real danger.

The King of Portugal did land near Wales... ALONE..
which i found inexplicable-
but never were the home Islands in any real danger -

being able to attack without fear of reprisal simply made the campaign too easy.

If its any consolation; when i played Sicily; in the mediterrean the AI was at least occaisionally harassing me if i let my garrisons grow too weak.

So i assume it was an opportunist; and not capable of the several-turns long course of action that would be required for anyone other than france to pressure me.

I'm sure the multiple 'personality' AI was intended; I just don't see that it is
actually implemented.