Nope.. CAA will want to stay in EASA... Big difference: you will have to pay more for being part of EASA and less say in what comes out of EASA...
So long SUCKAS!!! You will have to pay us to listen to us LOL
LMAO!!!! I won't be saying 'nuttink" to CAA, any more than I will EASA (who put the Arse...in EASA anyway??)!!
If the OPERATOR is outside of the EU (nothing to do with a country being an EASA State or not), then you dont need 2 flying tickets....2 medicals....or anything else. You need just whatever is appropriate for your aircraft registry. The UK is not in the EU :-p