So I just found this in the NZ App Store for Windows 10.  I assume its for Phones/Tablets.....but it shows up when using a Windows 10 PC as well.

I installed it...and very quickly figured out it very touch centric.  There's a little keyboard navigation....but it's like bad IE web site navigation.

I've sent in a feedback form to TVNZ saying please make it keyboard aware, arrows for navigation, enter for play/pause, esc for stop video and exit screens.  A defined key for jumping to the search box.

Anything to make it usable - and then I might use it.