The things I need most are *A redemptions in J from Europe to Australia, and the ability to earn a significant percentage of the required mileage through UK credit card spend. I haven't been super-diligent but from what research I have done there doesn't seem to be a better option than US, with a price tag of 120k/150k for F, earning through the SPG Amex, topped up through buying miles.
Exactly my requirements - and conclusion.