There are lots of places that will proably let you go flying with an instructor (there is no recpriocal agreement with the uk). The question should be where is going to be the most senic so you get your best bang for you pound!
I would give Simon Spencer Bower a ring at Wanaka helicopters, he opertes a few r22's a r44 and a AS-350. The terrain is awsome. Mt Aspiring, glaciers and the lake.
www.heliflights.co.nz. Wanaka is also where helicopter hunting was born (if you havent seen it see if you can get your hands on a video called the helicopter hunters)
There is an outfit at the airport in Nelson that has a r22.
There is also Heliflight in masterton on the north island.
www.heliflight.co.nz
Personally go to Wanaka, it is an amazing place.I would move there in a heart beat if I could figure out how to make a living.(wait till you see how cheap real estate is comming from the uk!).. if your dissapointed Ill buy you a beer.
later
RB
in snowy colorado, wishing he was on the south island.....