Whilst I agree that the UK really isn't the best place to be at the moment unfortunately that doesn't mean NZ is a good choice, you need to be very careful you don't get into a frying pan to fire situation.

NZ is in the grip of a deepening recession and things are steadily going to get worse, its isolation isn't going to insulate it from the problems the rest of the world suffers from.

Do all the research you can, read read and then read some more and when you've done that book a return flight and visit for a holiday so at least you can see what you're letting yourself in for.