Scotland will be treated as a "third country" in much the same way as the crown dependencies by EASA. In short this will mean all the RTF will more than likely be put out of business, GA will be very restricted by having to submit GAR for flights outside of the scottish airspace again as the CD's have to do trust me I have a colleague who has spent many many hours trying to reason with EASA and it is like trying to talk to a stone table top, so do not be under the impression that anyone can negotiate themselves a position you can't !!!!!!
To quote Pat Malone, ‘ No nation in Europe (never mind those that aren't my add) can go against EASA. It’s hard to refute clams that it is a rotten organisation, overflowing with untouchable public servants bereft of knowledge and understanding, but possessed of a religious reverence for paperwork, pointless box-ticking and extortionate demands for cash’.