The CJ1 Bizjet is based with Pacific Jets, which was set up by the same guy who has a stake in Christchurch Helicopters..
Good article on it in the Pacific Wings magazine just, along with a good account of the ferry flight to bring it home...
I believe the Lear 35 is based with Rural Air, and is kept in a hangar at Ardmore... I also believe it's the same one sporting a rather interesting paint job, with decal bullet holes all over the left front side of the aircraft, probably relevant since I believe this aircraft does target duties for the NZ Navy... ("Probably needs the old I'm pulling the target, not pushing it" sign ..)