BAengineer
I wouldn't take a lot of notice of Richard North, on his blog he claims that the UK cannot be a member of EASA as membership is only open to EU members - which must come as a bit of a shock to Iceland.
Perhaps you could provide a link to Richard North indicating that EASA membership is only open to EU members? A careful reading of his blog posts will reveal that Dr. North is well aware that EASA membership is open to both EU and EFTA states (of which Iceland is one) and indeed, he makes this clear in the next paragraph from my quoted piece from his
blog post at ♯ 333
The complication here is that the application must be submitted at least 30 days before the intended starting date of operation – but it cannot be made until the UK has left the EU and become a third country. And once he's sorted that out, there is the small matter of lodging proof of insurance in accordance with
Regulation (EC) No 785/2004.
There would also seem to be some slight complications for foreign aircraft. The EU (EASA) has in the past dealt with foreign airlines and issued their TCO approvals, permitting them to operate in the territory of EU Member States (and the Efta States).
But once the UK leaves the EU, these airlines will no longer have authority to operate in the UK. Thus, the British authorities (presumably the CAA) will have to set up its own approval programme, and invite all the foreign carriers (including EU/Efta carriers) to apply.