If you were breaking the speed limit, you will get a NIP in the post in the next 14 days. If they exceed 14 days ...you can sometimes dispute the fine.
I have been sticking to the speed limit or just under since for a while now. Now get average of 45MPG !!!
In my younger days ...well I amazed I'm still alive...
My record was 136mph ....If I had got stopped they would have thrown away the key I think. This was over 20 years ago however.