Hi all - any seasoned ex-London travellers...do you think it is more likely to get an upgrade on QF1 to Sydney 14/12 or QF10 to Perth 15/12? I haven't renewed my expertflyer subscription but can see the seat map on the QF1 in business has only two blocked seats but the QF10 on 15/12 has 6 blocked seats and 7 free seats on the seat map. I know they aren't that reliable but I'm looking for the best chance of an upgrade...I'll be on economy flex fare as a platinum. Thanks!