Well tbf if op wasn't speeding wouldn't be in this situation would they?Are you suggesting that Police shouldn't have to follow the law because OP was speeding?
Some information on the NIP can be incorrect and corrected later, but only information that is not critical to the alleged offence. The NIP is essentially asking the RK who was driving the car on a specific date / time. If that date information is incorrect how can OP supply the correct information?
I understand people (myself included) may get to 33 and think ******** and slow down but nearing to 40 clearly either didn't notice or not aware of limit on the road.
If he is told within 2 weeks or 2 months and the evidence shows 100% was speeding what's difference does the time frame make? Nothing at all.