Hi
My apologies if there are threads that cover this, but I did not manage to fine any good solid advice. I'm needing some advice for my parents - who are not members of any airline program. They are flying LHR-HKG-SYD-AKL returning AKL-HKG-AKL. All sectors in Business Class with Cathay apart from SYD-AKL which is on AirNZ metal.

My parents are based in London, and I'd like to get advice on the best way for them to earn and subsequently redeem miles - this redemption would likely be on a European short haul out of London. I'm guessing they can either: Join Cathay program, and try and redeem on a Oneworld partner, or join a BA program, credit the miles to BA and redeem with BA.

Some advice would be greatly appreciated.