I took some photos at Wigram back on 31-10-2007 of a couple of (what I thought were visiting) Cessnas parked near the control tower.
Now, just looking through the latest ownership changes, I see that they are both listed to the Christchurch Flying School (2005) Ltd.
Cessna A150L ZK-DNO, c/n A1500448, was recently briefly with Air Napier at Hastings and Wakelin Aviation before that. It still carried the Wakelin Aviation script. It carried the name DINO (for obvious reasoms) with them for a while.
The second "visitor" was Cessna 152 ZK-NPE, c/n 84064, down from the Bay of Island Aero Club, and off course with a registration of NPE has previous connections with the New Plymouth Aero Club.