A "huge" part of Amazon's Lord of the Rings series - set to be the most expensive TV show ever at $1.5 billion plus - will be produced in New Zealand, film industry insiders have confirmed to the Herald on Sunday.

A senior member of the Auckland film industry said Kumeu Film Studios (KFS) and Auckland Film Studios (AFS) have been working on pre-production on the Lord of the Rings (LOTR) for more than a year now, preparing and building studio locations. American crews were already in Auckland.

The industry insider, who spoke to the Herald on Sunday on condition