All NZ theory exams are conducted by ASL.
Aviation Services Ltd
All their exams are now CBT, and must be done at one their locations available from their exam timetable/locations. It can't be done remotely, online.
You can do LAW and BGT with them.
They're both a piece of piss to get through, 2-weeks part time study at the most for both.
Cheers
S2K