Hi all
Hopefully you can advise me here

I have a friend who is about to fly on a RTW ticket origin/dest SYD. He will be flying on UA (4 sectors incl 1 TransPacific), AC (4 sectors including 1 TransAtlantic) and SQ (2 sectors UK-AUS).. possibly also 2 BD UK Sectors.
He is resident in Australia but is British (can use a UK address if needed). He will be doing the whole set in biz class (where available).
He will also be flying again in future to the UK and Canada - possibly the US now and again.
So the simple question - which FFP of the *A members would be best for him?
Thanks!