My photos of the menu on my trip on QF2 from LHR to SIN in mid May 2023, and QF9 from PER to LHR.
I recall having the Vietnamese chicken salad on QF2 and thinking it was really quite good.
Pretty sure I had the braised beef on QF9, which was quite nice again, but a small serving.
I distinctly remember the quality of service from the London-based crew being better than the Aussie crew in my mind.
The London crew gave an impression of the crew all being friends amongs each other, did a really quick dinner service on both flights, and were happy to respond to call bell requests.
Can't say the same for the Aussie crew, who were generally more akin to "glacial service with a frown". Maybe I had a crew having an off day though, so I hesitate to make sweeping conclusions.