I was VC.10 Cabin crew at that time.
I did a BNE-DRW on 09/09/73 G-ARVC. (Standard VC.10)
We then positioned on Qantas 707 to HKG and then operated back
HKG/CCU/KWI on 13/09/73 on G-ARVE another Standard VC.10.
KWI/LHR on 17/09/73 on G-ARVE again.
I dont recall us ever going to RNG on any fleet and dont think BA flew there then?