sadly, you won't achieve this with a pilots job in the UK, whatever job you take, even abroad, you will have to accept a substantial drop in your income for several years. You may struggle ever to return to the UK.
Airlines are the cutting edge of capitalism, red in tooth and claw, and they will continue to find people who can just scrape by on the scraps that they offer you, nothing is going to change anytime soon. Its no consolation, but its not a great deal better further up the feeding chain, at present.