Sat here with nothing to do for a half hour the above question popped into my mind and I have gleaned the following.
Mazda and most magazines say we were to get 600 but What Car say 550.
This site https://www.howmanyleft.co.uk/vehicle/mazda_mx-5_30th_anniversary_edition say there are 344 taxed and 17 on SORN so that makes 361.
So where are the other 239 cars??
I have found that there may have been 143 extra cars allocated to the USA as they sold all there allocation very quickly.
So if they took some of our allocation that still leaves 96! Some may have been written off but certainly not 96 so over to the combined knowledge of the Club to come up with the answers!!!