Tax & UK
Thought Aircrew throughout EU were always taxed at home base, in spite of where they lived.
Base this on 2 cases I know
1) Lufthansa crew with homebase FRA - living in France (400km away) Tax base Frankfurt - trip to/from work fully deductable according to German tax laws. Actual to/from work used staff discounted feeder flights to save a fortune on tax.
2) Various Crossair crew with hombase BSL - living in France, Germany and other parts of Switzerland, taxed at source in Basel Town (BSL homebase).
Could be wrong though - worth researching for a few pennies.