Deliberately obscuring your numberplate is an offence usually punishable by a fixed penalty notice, and earlier this month a driver in Guildford was fine for this same offence.

If you were to report this to the police using email or giving your name or telephone number, then it would technically be possible for their son to track down this report if they were employed in the same constabulary, although there would also be a record of them doing so if they chose to.

We would suggest either reporting to your local constabulary and witholding your number, or you can report the crime anonymously to Crimestoppers either online or by telephone: crimestoppers-uk.org/