Hi Cath,
to MoveToNZ. Good to have you with us.
Here's a link to a
car shipper in the UK and there may be some useful info on here about shipping your vehicle or perhaps you could contact them for advice. Also, this is a link to the
NZ Customs Site . Perhaps there's a bit of information on there that will be helpful. And yet another link to the
biosecurity site where it tells you all about what processes your vehicle will have to go through. Doesn't mention anything about the costs involved though.