Post # 2 re UK gliders' transition to EASA Cs of A is not relevant to aeroplanes. Post # 4 is correct for aeroplanes.
UK gliders were not state registered or state controlled for airworthiness pre- EASA, they were under self regulation of the BGA (happy days...), hence a different process to transition them to EASA Cs of A. I was heavily involved in the process to achieve that and would compliment EASA officials (and UK CAA &, DfT) for their pragmatism and help in the face of the legal straightjacket of BR 1592/2002 created by the political system in Brussels.
Back to theme, V-tail,.....suggest you read EASA Part M for light aircraft (non-commercial) very carefully and work out the best option for yourself as controlled / un controlled environment regime, and also study what work as owner / pilot you can do yourself. It is actually more liberal than many are suggesting - though still not perfect. But then the redrafting of the new / revised Part M was led by a (UK) glider pilot.....