Originally Posted by Spiff
No.
A oneworld premium card is insufficient to get into the arrivals lounge. A Qantas Club membership ranks even below that.
You can, of course, try. No one will beat you with sticks for attempting to get in without the right credentials.
But it's probably not happening.
You have no chance whatsoever of getting into the BA/QF Lounges in T1 or T4 unless you are travelling F or J or have BA Gold Card or QF Chairman's Club (or whatever its called). They turn so many people away that they are quite ruthless. And no guests either!