It’s not so much where you live, it’s where you don’t live. It’s necessary to pass the non-residency tests in the UK, then either find a country with a favourable tax regime for non-nationals, e.g. Portugal, or not spend long enough anywhere outside the UK to become liable for taxation under their rules.
If the flights you operate go in or out of the UK, then some of that counts as work and is taxable but when set off against allowances will leave you in a low tax bracket with very little to pay.