there used to be a guy called "diesel doctor" or something like that, google it, and he claimed to be able to fix bosch vp30 fuel pumps for around £150iirc.

Also might be worth giving richard brothers in redruth a bell as they're usually a knowledgable lot!

I have seen one with damage to the loom where it had rubbed through, cant remember where but it was pretty obvious once the inlet was removed, might be worth checking it.