There is no fight back on the cards, the whole thing is perfectly legal and I doubt
any government on national or local level would step in to something that is perfectly legal. We have been using cheap European labour for years so how is this any different to use European pilots flying EU reg aircraft happened to be based here which its legal, because it is aviation? Boris and co have made it plainly clear that they don’t give two hoots about UK aviation other then scoring some manufacturing deals, I think UK pilots and there lisences are way down on the list of priorities unfortunately and it is just the way it is.