Hi Tommy,
I've lived in NZ for over 35 years (originally a scot) all good advice above.
I also house sat a couple of years ago in Queensland for 3 months.
NZ and Aus are similar in there basic lifestyle and I often say it's the same difference as between Canadians and Americans. (ie, Canadians softer and humble, Australians louder more brash) Generalisations I know, but this is only my opinion.
The best thing is the weather and the people. They are characterfull people, it is a much richer economy than NZ and for me has plenty of culture. It is a can do society, they tend to back themselves, and have a wonderfull sense of fun.
I emigrated from Scotland as a lad of 16 (my family did, as assisted passage, one of the £5 poms)
I don't regret it for one second, as I know the sort of life I would have had and the life I've had in Australasia has been and continues to be fantastic.
There are many poms & other nationalties coming out to Aus & NZ mostly to avoid the stresses of high populations, crime, traffic and over regulated societies.
I am not in your position, I have a friend who lives in Yorkshire and comes out to NZ for 4 months every year, has built a house in NZ and enjoys both countries.
Currently traveling in UK, I listened to UK radio about people talking about being unemployed, only yesterday, and going by this times may be getting tougher in the UK!
You will only know for sure if you suck it and see.
It all depends on what you are wanting in a new life?
No bodies opinion will help you in the decision to go to Aussie .... To tough a call for me!
Best of British Mate
Cheers
Jimu