Found your site after a brief search and have found all sorts of good info. Alas nothing to help with this new problem that happened this morning!
So I'm riding along stuck behind a lorry at about 40mph in 2nd gear. It's clear the other way so I open her up, change to 3rd and back off a bit (don't want to break the speed limit now do we

As I'm backing off I can hear a rattling noise. Very freqeuent and very loud. So I pull over (pulling the clutch in as soon as I could).
When I'm stopped, hit the start button with nothing apart from a click from the start relay. Starting to think bad things at this point (and expense).
Recovery man suggests it may be the starter. So I whip the starter out when i get home. Put it in a high gear and push the bike forward. The same noise is present. Almost sounds like a ratchet.
The starter motor shaft (and starter cluctch wheel) teeth are fine. The starter clutch moves like the manual said it should (good old Haynes).
Before I start taking things apart that I don't need to I was hoping you guys and gals may be able to help with this little problem!
Anyone come across this problem before at all or anything similar?