This question was raised at a recent CAA engineer Seminar and the answer was (almost) this:
The CAA legal bods have not yet determined that there would be any real effect or not, but that their current impression is that nothing should change.
My opinion, not that I have any sway in these things, is that there should not be any difference in our current agreements/arrangements with EASA. Whether the CAA feels a need to bolster its controls on their own levels of concern is another question, but any increase in staffing or levels of oversight would not be funded/aided by EASA...meaning fund raising through UK fees.
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