Hi - what was your speed and do you have any other points on licence?
Are you asking whether you have a defence?
If you haven't responded to the S172 request then it is no defence to say that the NIP was out of time.
They may reissue the NIP and therefore refresh the S172 demand. If they do then I would comply. Failing to identify carries 6 points and a fine in the mid hundreds which is almost double what you would have received for the speeding.
They may or may not be out of time anyway. It doesn't matter now as you didn't respond.
Can I clarify anything for you?
You can contact them but it doesn't tend to change anything really.
Sometimes the NIPs reveal a number. Sometimes not. If not your only option really is to write in which is a bit like sending letters into a black hole these days.
They will probably reissue. They usually do issue reminders.
No problem and all the best.
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