Photo archives at National Library of New Zealand

[ziminyang]

Run into their new (beta) website while searching for images. The result is very satisfactory considering it is free.

http://beta.natlib.govt.nz/items?text=hms+new+zealand

For any of the photo you found, there is a link to original scan which is of very high resolution for reference. And they do have quite some photos on British or British made battleship and battlecruisers.

Have fun.