I'm wondering if you believe that all three of the contradictory statements from No. 10 are true.
Or, indeed, any of them.
I believe it would be the case that if we had entered the Eu scheme that our locally arranged and manufactured ventilators and any "excess" that the EU deemed we may have, would become part of the scheme to be distributed as the EU see fit. I suspect the UK Government may well be "looking after their own" by NOT joining the scheme. A similar arrangement is in place in the US where Federal Government can take back and reallocate ventilators if it deems one state to require them more than another.
So why did the German Army donate 60 Ventilators to the UK? Were they looking after their own?
Says some freelance journo whose area of 'expertise' doesn't appear to include epidemiology, virology, medicine, the management of pandemics, procurement or anything remotely relevant.
I think there are many facing similar worries, that same link also quotes that "An EU spokesperson confirmed that it had now received all the bids from ventilator suppliers and that it was currently evaluating the tenders on offer"https://www.wired.co.uk/article/uk-coronavirus-ventilators
Looks like we won't be getting enough Ventilators by the time we hit our peak.