MikeWhiskey;
At a post Brexit briefing for AOC operators at the CAA, THEY anounced that they will stay as part of EASA to maintain commonanlity of legislation.
As TOO says, much expertise has already devolved to EASA, rebuilding the CAA from scratch would be a massive and costly exercise, and a whole legislative process on its' own.
Oddly, much as I bitch and whine about EASA I actually prefer the legislation to the days of JAR and before, when in many ways we were far more restricted than now.
SND