Originally Posted by
stifle
I know British Airways is in the habit of offering upgrades from premium economy to business for £399 per sector when they have space, but they don't fly to BNE so you'd have to go to SIN or possibly and pick up another airline there.
No so much anymore, and certainly not from UK-Australia. Onboard paid upgrades are gone on BA as well, and the MMB upgrade are always dearer than £400 per sector.