Sewushr, thanks for taking the time to explain succinctly. So my suspicions about the possibility of Jet2 basing aircraft in Spain as per pre-Brexit are that it would come down to having crew with U.K. licences being able to live or spend enough time in those Spanish destinations? Because any positioning flights would be non revenue there would be no problem doing so on G-Reg aircraft.
The issue is solely one of cabotage within the EU. I would therefore not be surprised to see some Spanish bases purely for the purpose of adding resilience into the operation. Not suggesting this will open up W patterns, or routes to non U.K. bases.