Dear Naomi, Your can order Naturalisation certificates to be downloaded from the National Archives in Kew - I recently did it and found it was a wonderful service - I literally had the whole certificates and parts sent to my computer - an excellent way of dealing with the tyranny of distance (Brisbane is a long way from London). Yes .. I know that it is an expensive service, but well worth the money. Good luck with your Rubinstein search. Kind regards, Miriam Pollak ex Sydney, now Cambridge, UK