Ann: Half Yearly Report and Accounts, page-34

Based on the numbers you have provided,
NZ total 0.892 mill
ANZ total 5.057 mill
UK total 11.1 mill.
I.e. UK is 2.2 times the size of ANZ combinedor 2.7 times the size of the Australian market.
This is just the start though. Europe is more than 10 times the size of our market and the company is continuing to pursue more markets and appears to be getting plenty of interest (see Marks twitter comment below).
I'm quite confident that this will be a very big year for the company and for us shareholders.
Just too many avenues for much stronger growth here and abroad and too high a margin on the product to be anything but confident.