Hi David,
I know where you are coming from. A little extra attention to the road and a little less at the wrong time for the speedo. I challenge anyone to deny that they are guilty of same.
I was done for 71 about 12 years ago. They allow 10 over the limit on cameras and often 15 on mobile patrols.
So, David, its not as if you were hooning. The whole police program is meant to make it safer on the roads and keep the dangerous antics to a minimum. Its not to be a bullying instrument for control hungry freaks and intimidate the safe law abiding drivers.
I suppose its worth a try to write to the authorities to have it quashed.
Wish you the best with that.
Cheers