Engine strip-down inspection
Believe engine is being sent back to HKG for strip investigation
Seems a bit unlikely. Surely this will be considered a 'serious incident' or even an 'accident' and the engine strip-down would be under AAIB (UK engine) or NTSB (happened in the US of A, aircraft US-certified) or ATSB (Oz-registered aircraft) supervision. You'd be wanting a major engine plant with all the clever toys for metallurgy, electron-microscopy, etc. etc. So not an MRO, a main plant, so I'd be guessing RR Derby.