A Berkhamsted garage will mark drivers’ catalytic converters for free from today.
The markings, which take about 10 minutes, deter thieves by making it easier for police to find out where stolen units come from.
Catalytic converter thefts have risen in recent years due to the high price of metal. Roy Chapman garage will mark the units in diesel vehicles that weigh up to 3.5 tonnes for anyone who rings 01442 871234 to book in advance.