I'm puzzled why you think Prestwick is a frontrunner in this when you just have to look at a map to see that it has no chance, there's precious little ability to extend the runway and there's vastly too many people living nearby, every time a rocket lights up 6000 people will loose their hearing. On that point the Prestwick response explicitly states they shouldn't be chosen if they can't handle the noise and there is no way they could.
From the consultation responses it's clear that on any basis that Prestwick is a good idea Newquay is a far better one and on any basis Newquay is a bad idea Campbeltown is better and Newquay is still better than Prestwick.