Good ol NZ hasnt heard of Cat II/III yet.... expected sometime later this century!
The weather factor @ Invercargill could never justify installing ILS.
We don't need Cat II/III, the weather never gets that bad.....
NZ has its 1st RNP & baro-VNAV approaches in use already. It has had GPS approaches for more than 11 years. How many in the UK again?
Air NZ will have the first RNP0.3 certificated Airbuses in the world.....(see latest Flight)
Queenstown is surrounded by mountains (procedure start altitude 10000ft) - something you won't see a lot of around UK airfields...
Airways NZ has just installed an ILS at Subic Bay - even the FAA said it couldn't be done....
...and I concur with gearup's comments, though all bets are off when the Bledisloe Cup comes up ......