Pitcairn Island trial

I note that the NZ Herald has named the seven Pitcairn Islanders charged with child sex abuse, as the Pitcairn court has lifted name supression.

I winder though whether they could have been named earlier? NZ is not subject to Pitcairn Island law, and as long as one never planned to visit Pitcairn Island, could they not have been named within NZ?

We regularly read about happeneings in the UK, which have UK name supression. Why do we ignore UK name supression decisions but adhere to Pitcairn Island ones?