No Miller, sorry mate, you are wrong, if you are willing to sift through the tax issues, as well elicit the services of a good expat oriented tax accountant, and can track your days abroad, then you can indeed live one place, and pay tax in another, which may be more desirable in terms of the paid amount, IE the UK, and Canada, you can pay it in Canada, on your declared income, but be flying out of the UK, of course the ability of residence in the UK is essential.
But what took issue with in your post was the assumption that if a fellow is working for AAi then he "must" be dodging taxes
well I guess that means all the UK based pilots and engineers with AAI are all diligently paying those same taxes, They would never claim to be "retired" would they???
Wake up, this is not a foreign issue, the British are just as likely to manuever around the taxes if possible as anyone else.