QF shifted to MEL-PER-LHR on the 787 before the pandemic. QF could bring back an A380 for MEL-SIN with a long wait in SIN but that wouldn’t solve only having one QF flight a day each way SIN-LHR on the A380. SIN-LHR being the main leg I’d want an upgrade on if flying to LHR via SIN.I thought they did, and two A380s are in the UAE getting cabin upgrades.