The folks at the UKTV focused Mausoleum Club Forum were chatting about where copies of old UK TV shows might be hiding in archives around the world and how to find out what screened in particular countries. I gave them my suggestions for New Zealand as follows:
ngataonga.org.nz - New Zealand’s audiovisual archive. Their purpose is to collect, care for and share the audiovisual Taonga (treasure, anything prized) of Aotearoa. They have stewardship of the Television New Zealand video archives which might include a bit of UK material but probably not a lot. Check out the Status of the collection.
The Listener was the publication of record for NZ TV broadcasts for most of 20th century. From an archival television perspective their website has always sucked, and the situation is even worse in the aftermath of their temporary closure and sale in 2020/21. As far as I know no one has any plan to digitize back issues so any research on screenings needs to be with hard copies in a library. Pre covid I used the Auckland (NZ) Library collection, and which I lived in Christchurch I would refer to the University of Canterbury's set. There are some collections of the Listener in the UK llas.ac.uk/resources/ including the University of Edinburgh: discovered.ed.ac.uk.
There are plans in place to add editions of The Christchurch Press up to 1995 to the National Library’s Papers Past website over the next two years, which will help when researching screenings as The Press usually ran daily listings along with some reviews and promotional articles/interviews.
I "borrow" any scans of schedules I happen across on the inter-webs and put them here: TV listings through the years