I'm a UK citizen. Some time ago, I worked for a company based in New Zealand. The company went public on NZX and I ended up with some shares.
I have never been to New Zealand and don't have any bank accounts, etc. outside of the UK. I've looked at some UK based trading platforms/stock brokers, but they don't seem to offer the ability to trade shares listed on NZX.
How would I go about selling these shares? Also, would I be liable to pay tax in NZ?