The only thing I would say, is that there just may be some sort of expedited passage in the works, towards a UK MHRA approval after a Brexit crash out. It's a longshot admittedly, but they could pick up with a Scientific Opinion, and maybe use Specials RWE outcomes to supplement P3 data. Obviously it would need a facilitative MHRA, with a point to demonstrate.
Regarding the Brexit crashout; I am pleased to announce that my survival prepping is well under way..