The first was a visiting Yakovlev Yak 18T, ZK-SSR. This aircraft is registered to a Nelson address.
Also registered to a Nelson address :-) is this Air Nelson Bombardier DHC-8, ZK-NEC, part of the Air New Zealand group.
Lastly is this Air New Zealand Airbus A320, ZK-OJH in the Star Alliance livery. Nice :-)