Just a few notes. Mark-ups do go to the dealership, not Honda. The Swindon plant wasn't a FK8 only facility. And the Honda Civic in general has been one of the most aftermarket supported cars for the last 30 years ;)
The sales manager at the Honda I'm on the waitlist for told me this morning:
All I can say is that availability will be extremely limited. I would anticipate a longer than expected wait.