Currently showing on TV1. I think TVNZ is showing two parts at a time,
(starting last night) so it concludes tonight.

The four, 45 minute, episodes of "Mr Bates vs. The Post Office" are now available for watching online for free via TVNZ on demand.

This is the link to episode one...

https://www.tvnz.co.nz/shows/mr-bates-vs-the-post-office/episodes/s1-e1


cheers, Ian.