Whopps Einstein ! Don't get caught in the old 5 Day- � Weeks trap, if you're caught speeding the police have unlimited time to process your prosecution, a friend of mine was clocked and was not contacted for over 2 months, the response was pretty simply - meet you in court! He in the end accepted it (he had no legal leg to stand on) �60 fine and 3 Points. Answer is - drive at the speed limit.
You have no sure way of knowing either that you have been filmed breaking the speed limit or that you will actually receive a ticket. However the enforcement authority has to issue a notice of intended prosecution or a conditional fixed penalty offer within 14 days of the alleged offence. There are a couple of add-ons to the 14 day period. For example, the day of the offence is not included and reasonable time for postal delivery has to be allowed. So, if you've not got a ticket within 3 weeks you are unlikely to be getting one.