I find these class comments quite interesting (not just yours, they pop up occasionally on the forum).
I agree that there is definitely a class thinking in the UK, not a good thing. However, I don't really agree that there isn't one here. There is a large class of people with almost zero social mobility. They make up what is called the 'tail end' of achievement in schools, a large part of beneficiaries and prison population. They are generally less healthy, less educated and poor. In NZ, the social status of your parents is more of an indication of your own future state than it is in the UK.
The white middle classes may be more equal, I don't quite see that equality across races and economic classes at all.
Daniela