Cleaned it!!
To my eternal shame, in 1 year of ownership, this is the first time I've actually put soap and water to it.
I've always wiped it down, removed the bugs, cleaned the screen, etc.
I don't ride in the winter, and wouldn't intentionally go out in the rain, although there have been a few times when I've been caught out.
Thought I'd done a fairly comprehensive job, but just realised that I missed the rear of the no plate.