My only rattle is now an ex-rattle!
It was the one several have reported, sounds like a tinny noise light tinkly rattle, or even similar to electrical arcing & it comes seems to come from inside or behind the instrument binnacle on RHD models, and can be VERY intermittent....
Feel / look down the left hand side of the steering column all the way down to where the knee protection under the dashboard finishes, then feel under there about 2 - 3 inches up. There is a sharp thin piece of metal and a pipe which feeds air from the heater matrix. It is the plastic pipe that rattles on the thin metal, so either stick some rubber foam insulation pads on the pipe or, as I did, bend the thin metal away from the plastic pipe...
I am now officially rattle free!