Originally Posted by
Globaliser
You can phone BA to book! And then you can specify H class if you want.
At first glance, it seems to me that you're unlikely to find a valid fare LHR-SYD // MIA-LHR, so your itinerary probably needs a round-the-world fare or something similar.
My understanding is I can still claim tier points on BA and One World flights that are booked through a third party? It's just that it wouldn't be automatic, and I would have to enter my BA membership number?
That way I could book all three legs in one place - my concern was ensuring H class or equivalent.