Life is short and you must do what makes you happy, even if it means living someplace else. But first just think of all the time, work, and money spent to get to NZ. As this forum proves there are thousands who would jump at the opportunity you have to live in such a place. Perhaps some more time will make you feel better about your new life in NZ. I wish you the best whatever you decide to do and hope you find happiness either in NZ or the UK, though if you’re in NZ next April I’ll buy you a beer at a pub of your choice in Nelson!
I hope the economy and job market improves by next year when we plan to arrive.