Beaker your information is incorrect,
All the Easyjet, Wizzair and DHL UK based aircraft are on the G Reg, so will need a UK Part FCL license after 2022.
Easyjet have the three AOCs, UK, Austrian and Swiss. But the UK AOC is all G Reg.
Wizz Air UK (clue UK) is all on the G register.
DHL have the UK based aircraft on the G Reg.
So Ryanair is the only one that has EU registed aircraft based in the UK in any numbers.
So unless you want to work for Ryanair you probably aren't missing out on much by only having a UK license.