To quote Te Ara, the NZ Enclyopedia:
Wh: There is some difference of opinion in respect to the correct pronunciation of the wh sound. It is not a compound of w and h, but represents the single voiceless consonant corresponding with w and is pronounced by emitting the breath sharply between the lips. Most tribes in New Zealand today assimilate the sound to that of f in English.
With that in mind, here's an example of NZ advertising.
Wh: There is some difference of opinion in respect to the correct pronunciation of the wh sound. It is not a compound of w and h, but represents the single voiceless consonant corresponding with w and is pronounced by emitting the breath sharply between the lips. Most tribes in New Zealand today assimilate the sound to that of f in English.
With that in mind, here's an example of NZ advertising.
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjF4HtC_18U9N3MDSZtqQJQehydJdXSUfEASfIRnmh_qmPm_r3s4V_b-sXLeG2U9-YakQ1aLl0k5qWJfcv1kbEjlgy-U4GRYbwLxMgKUIA3BPhPOgmsYFXHNlsYbITMJMXS7czO/s400/Sign.jpg)
*EDIT* this advert has since been removed by it's owners, see the following news story