Mmmmmm ...
1985 .... the other major operator offshore in Australia at that time was Lloyd Helicopters.
Commercial Aviation (an Evergreen joint venture) were just about out of business having lost contracts to LLoyds.
I think 'Helicopter Resources' were also dipping their toes in with their S76's (?).
And I believe the Okanaghan/Hookway S76 might still have been in work.
Other than for those above my memory fails ....
Cheers ....