I've just had a business opportunity pop up and need to travel from Auckland to Sydney urgently the day after next. The thing is my New Zealand passport which would normally let me straight in has expired so I need to fall back to my UK passport, however travelling as a UK citizen requires an eVisitor visa. I went to the Australian immigration office in Auckland today and was told to apply online and that I would most likely be granted this very quickly, if not immediately. 6 hours have passed however and I still haven't even received a confirmation email. I'm starting to get a little nervous.
My question is can I enter Australia for the day using my UK passport for entry and my expired New Zealand passport (or my birth certificate) as proof of residency? I'm still a New Zealand citizen and therefore I assume entitled a SCV. If I present proof of my citizenship at customs will they just check my eligibility and let me through?