Why on earth would we want you in the UK if you are not paying tax here?
Why don't you concern yourself with the very small number of foreigners in the UK who don't contribute to the UK tax system and bleed the benefit system for all its worth!
If it is above board and legal then I quite frankly don't give two hoots as to what anyone else thinks!
Hairy A320
If you spend more than 90 days in the UK per year then you will probably be liable for at least some UK tax. If you will be working for a UK airline then your tax will probably be deducted before your salary reaches you (known as Pay As You Earn - PAYE).