I've used Wise (previously Transferwise) for years to transfer money between Aus and NZ.
Just noticed that they have a deal where if you sign up with a referral code (See the random codes below) you get zero fees on your first NZ$900 transfer.
I just tried an example to Australia and that's about a $5 savings, not sure what other countries are like, but if you use wise or are thinking about it, it's a nice savings to have. And even more useful if you're transferring a large amount!
Yep, that ones been around a while.
The referrer also gets NZ $130 when three signups send over NZ $350 in one transaction (not £50 for every 3 signups and/or £15 like the link states)