Guessed the proportions. Did not just use RN white ensign since MCH (accessed 7 Feb 06) shows a thin lesser St. George cross in both UT drawings (RN ensign has quite a thick lesser cross). Five pointed star info from List of New Zealand flags.
No machine-readable source provided. Own work assumed (based on copyright claims).
No machine-readable author provided. Greentubing assumed (based on copyright claims).