Maybe he worked for a couple outfits that went bellyup
Don't recall these going bust:
APNG
Air Naru (at least not in GB's time there)
Oz Jet (same comment as for Air Naru)
NJS
CASA
SAW (understand he left before their demise, but reality may be otherwise.)
Didn't he also have a stint with SQ at MCY - they're still operating.
so, possibly only Sky .................................